builtin/clone.c

   1 /*
   2  * Builtin "git clone"
   3  *
   4  * Copyright (c) 2007 Kristian Høgsberg <krh@redhat.com>,
   5  *               2008 Daniel Barkalow <barkalow@iabervon.org>
   6  * Based on git-commit.sh by Junio C Hamano and Linus Torvalds
   7  *
   8  * Clone a repository into a different directory that does not yet exist.
   9  */
  10
  11 #define USE_THE_INDEX_COMPATIBILITY_MACROS
  12 #include "builtin.h"
  13 #include "config.h"
  14 #include "lockfile.h"
  15 #include "parse-options.h"
  16 #include "fetch-pack.h"
  17 #include "refs.h"
  18 #include "refspec.h"
  19 #include "object-store.h"
  20 #include "tree.h"
  21 #include "tree-walk.h"
  22 #include "unpack-trees.h"
  23 #include "transport.h"
  24 #include "strbuf.h"
  25 #include "dir.h"
  26 #include "dir-iterator.h"
  27 #include "iterator.h"
  28 #include "sigchain.h"
  29 #include "branch.h"
  30 #include "remote.h"
  31 #include "run-command.h"
  32 #include "connected.h"
  33 #include "packfile.h"
  34 #include "list-objects-filter-options.h"
  35 #include "hook.h"
  36
  37 /*
  38  * Overall FIXMEs:
  39  *  - respect DB_ENVIRONMENT for .git/objects.
  40  *
  41  * Implementation notes:
  42  *  - dropping use-separate-remote and no-separate-remote compatibility
  43  *
  44  */
  45 static const char * const builtin_clone_usage[] = {
  46         N_("git clone [<options>] [--] <repo> [<dir>]"),
  47         NULL
  48 };
  49
  50 static int option_no_checkout, option_bare, option_mirror, option_single_branch = -1;
  51 static int option_local = -1, option_no_hardlinks, option_shared;
  52 static int option_no_tags;
  53 static int option_shallow_submodules;
  54 static int option_reject_shallow = -1;    /* unspecified */
  55 static int config_reject_shallow = -1;    /* unspecified */
  56 static int deepen;
  57 static char *option_template, *option_depth, *option_since;
  58 static char *option_origin = NULL;
  59 static char *remote_name = NULL;
  60 static char *option_branch = NULL;
  61 static struct string_list option_not = STRING_LIST_INIT_NODUP;
  62 static const char *real_git_dir;
  63 static char *option_upload_pack = "git-upload-pack";
  64 static int option_verbosity;
  65 static int option_progress = -1;
  66 static int option_sparse_checkout;
  67 static enum transport_family family;
  68 static struct string_list option_config = STRING_LIST_INIT_NODUP;
  69 static struct string_list option_required_reference = STRING_LIST_INIT_NODUP;
  70 static struct string_list option_optional_reference = STRING_LIST_INIT_NODUP;
  71 static int option_dissociate;
  72 static int max_jobs = -1;
  73 static struct string_list option_recurse_submodules = STRING_LIST_INIT_NODUP;
  74 static struct list_objects_filter_options filter_options;
  75 static struct string_list server_options = STRING_LIST_INIT_NODUP;
  76 static int option_remote_submodules;
  77
  78 static int recurse_submodules_cb(const struct option *opt,
  79                                  const char *arg, int unset)
  80 {
  81         if (unset)
  82                 string_list_clear((struct string_list *)opt->value, 0);
  83         else if (arg)
  84                 string_list_append((struct string_list *)opt->value, arg);
  85         else
  86                 string_list_append((struct string_list *)opt->value,
  87                                    (const char *)opt->defval);
  88
  89         return 0;
  90 }
  91
  92 static struct option builtin_clone_options[] = {
  93         OPT__VERBOSITY(&option_verbosity),
  94         OPT_BOOL(0, "progress", &option_progress,
  95                  N_("force progress reporting")),
  96         OPT_BOOL(0, "reject-shallow", &option_reject_shallow,
  97                  N_("don't clone shallow repository")),
  98         OPT_BOOL('n', "no-checkout", &option_no_checkout,
  99                  N_("don't create a checkout")),
 100         OPT_BOOL(0, "bare", &option_bare, N_("create a bare repository")),
 101         OPT_HIDDEN_BOOL(0, "naked", &option_bare,
 102                         N_("create a bare repository")),
 103         OPT_BOOL(0, "mirror", &option_mirror,
 104                  N_("create a mirror repository (implies bare)")),
 105         OPT_BOOL('l', "local", &option_local,
 106                 N_("to clone from a local repository")),
 107         OPT_BOOL(0, "no-hardlinks", &option_no_hardlinks,
 108                     N_("don't use local hardlinks, always copy")),
 109         OPT_BOOL('s', "shared", &option_shared,
 110                     N_("setup as shared repository")),
 111         { OPTION_CALLBACK, 0, "recurse-submodules", &option_recurse_submodules,
 112           N_("pathspec"), N_("initialize submodules in the clone"),
 113           PARSE_OPT_OPTARG, recurse_submodules_cb, (intptr_t)"." },
 114         OPT_ALIAS(0, "recursive", "recurse-submodules"),
 115         OPT_INTEGER('j', "jobs", &max_jobs,
 116                     N_("number of submodules cloned in parallel")),
 117         OPT_STRING(0, "template", &option_template, N_("template-directory"),
 118                    N_("directory from which templates will be used")),
 119         OPT_STRING_LIST(0, "reference", &option_required_reference, N_("repo"),
 120                         N_("reference repository")),
 121         OPT_STRING_LIST(0, "reference-if-able", &option_optional_reference,
 122                         N_("repo"), N_("reference repository")),
 123         OPT_BOOL(0, "dissociate", &option_dissociate,
 124                  N_("use --reference only while cloning")),
 125         OPT_STRING('o', "origin", &option_origin, N_("name"),
 126                    N_("use <name> instead of 'origin' to track upstream")),
 127         OPT_STRING('b', "branch", &option_branch, N_("branch"),
 128                    N_("checkout <branch> instead of the remote's HEAD")),
 129         OPT_STRING('u', "upload-pack", &option_upload_pack, N_("path"),
 130                    N_("path to git-upload-pack on the remote")),
 131         OPT_STRING(0, "depth", &option_depth, N_("depth"),
 132                     N_("create a shallow clone of that depth")),
 133         OPT_STRING(0, "shallow-since", &option_since, N_("time"),
 134                     N_("create a shallow clone since a specific time")),
 135         OPT_STRING_LIST(0, "shallow-exclude", &option_not, N_("revision"),
 136                         N_("deepen history of shallow clone, excluding rev")),
 137         OPT_BOOL(0, "single-branch", &option_single_branch,
 138                     N_("clone only one branch, HEAD or --branch")),
 139         OPT_BOOL(0, "no-tags", &option_no_tags,
 140                  N_("don't clone any tags, and make later fetches not to follow them")),
 141         OPT_BOOL(0, "shallow-submodules", &option_shallow_submodules,
 142                     N_("any cloned submodules will be shallow")),
 143         OPT_STRING(0, "separate-git-dir", &real_git_dir, N_("gitdir"),
 144                    N_("separate git dir from working tree")),
 145         OPT_STRING_LIST('c', "config", &option_config, N_("key=value"),
 146                         N_("set config inside the new repository")),
 147         OPT_STRING_LIST(0, "server-option", &server_options,
 148                         N_("server-specific"), N_("option to transmit")),
 149         OPT_SET_INT('4', "ipv4", &family, N_("use IPv4 addresses only"),
 150                         TRANSPORT_FAMILY_IPV4),
 151         OPT_SET_INT('6', "ipv6", &family, N_("use IPv6 addresses only"),
 152                         TRANSPORT_FAMILY_IPV6),
 153         OPT_PARSE_LIST_OBJECTS_FILTER(&filter_options),
 154         OPT_BOOL(0, "remote-submodules", &option_remote_submodules,
 155                     N_("any cloned submodules will use their remote-tracking branch")),
 156         OPT_BOOL(0, "sparse", &option_sparse_checkout,
 157                     N_("initialize sparse-checkout file to include only files at root")),
 158         OPT_END()
 159 };
 160
 161 static const char *get_repo_path_1(struct strbuf *path, int *is_bundle)
 162 {
 163         static char *suffix[] = { "/.git", "", ".git/.git", ".git" };
 164         static char *bundle_suffix[] = { ".bundle", "" };
 165         size_t baselen = path->len;
 166         struct stat st;
 167         int i;
 168
 169         for (i = 0; i < ARRAY_SIZE(suffix); i++) {
 170                 strbuf_setlen(path, baselen);
 171                 strbuf_addstr(path, suffix[i]);
 172                 if (stat(path->buf, &st))
 173                         continue;
 174                 if (S_ISDIR(st.st_mode) && is_git_directory(path->buf)) {
 175                         *is_bundle = 0;
 176                         return path->buf;
 177                 } else if (S_ISREG(st.st_mode) && st.st_size > 8) {
 178                         /* Is it a "gitfile"? */
 179                         char signature[8];
 180                         const char *dst;
 181                         int len, fd = open(path->buf, O_RDONLY);
 182                         if (fd < 0)
 183                                 continue;
 184                         len = read_in_full(fd, signature, 8);
 185                         close(fd);
 186                         if (len != 8 || strncmp(signature, "gitdir: ", 8))
 187                                 continue;
 188                         dst = read_gitfile(path->buf);
 189                         if (dst) {
 190                                 *is_bundle = 0;
 191                                 return dst;
 192                         }
 193                 }
 194         }
 195
 196         for (i = 0; i < ARRAY_SIZE(bundle_suffix); i++) {
 197                 strbuf_setlen(path, baselen);
 198                 strbuf_addstr(path, bundle_suffix[i]);
 199                 if (!stat(path->buf, &st) && S_ISREG(st.st_mode)) {
 200                         *is_bundle = 1;
 201                         return path->buf;
 202                 }
 203         }
 204
 205         return NULL;
 206 }
 207
 208 static char *get_repo_path(const char *repo, int *is_bundle)
 209 {
 210         struct strbuf path = STRBUF_INIT;
 211         const char *raw;
 212         char *canon;
 213
 214         strbuf_addstr(&path, repo);
 215         raw = get_repo_path_1(&path, is_bundle);
 216         canon = raw ? absolute_pathdup(raw) : NULL;
 217         strbuf_release(&path);
 218         return canon;
 219 }
 220
 221 static int add_one_reference(struct string_list_item *item, void *cb_data)
 222 {
 223         struct strbuf err = STRBUF_INIT;
 224         int *required = cb_data;
 225         char *ref_git = compute_alternate_path(item->string, &err);
 226
 227         if (!ref_git) {
 228                 if (*required)
 229                         die("%s", err.buf);
 230                 else
 231                         fprintf(stderr,
 232                                 _("info: Could not add alternate for '%s': %s\n"),
 233                                 item->string, err.buf);
 234         } else {
 235                 struct strbuf sb = STRBUF_INIT;
 236                 strbuf_addf(&sb, "%s/objects", ref_git);
 237                 add_to_alternates_file(sb.buf);
 238                 strbuf_release(&sb);
 239         }
 240
 241         strbuf_release(&err);
 242         free(ref_git);
 243         return 0;
 244 }
 245
 246 static void setup_reference(void)
 247 {
 248         int required = 1;
 249         for_each_string_list(&option_required_reference,
 250                              add_one_reference, &required);
 251         required = 0;
 252         for_each_string_list(&option_optional_reference,
 253                              add_one_reference, &required);
 254 }
 255
 256 static void copy_alternates(struct strbuf *src, const char *src_repo)
 257 {
 258         /*
 259          * Read from the source objects/info/alternates file
 260          * and copy the entries to corresponding file in the
 261          * destination repository with add_to_alternates_file().
 262          * Both src and dst have "$path/objects/info/alternates".
 263          *
 264          * Instead of copying bit-for-bit from the original,
 265          * we need to append to existing one so that the already
 266          * created entry via "clone -s" is not lost, and also
 267          * to turn entries with paths relative to the original
 268          * absolute, so that they can be used in the new repository.
 269          */
 270         FILE *in = xfopen(src->buf, "r");
 271         struct strbuf line = STRBUF_INIT;
 272
 273         while (strbuf_getline(&line, in) != EOF) {
 274                 char *abs_path;
 275                 if (!line.len || line.buf[0] == '#')
 276                         continue;
 277                 if (is_absolute_path(line.buf)) {
 278                         add_to_alternates_file(line.buf);
 279                         continue;
 280                 }
 281                 abs_path = mkpathdup("%s/objects/%s", src_repo, line.buf);
 282                 if (!normalize_path_copy(abs_path, abs_path))
 283                         add_to_alternates_file(abs_path);
 284                 else
 285                         warning("skipping invalid relative alternate: %s/%s",
 286                                 src_repo, line.buf);
 287                 free(abs_path);
 288         }
 289         strbuf_release(&line);
 290         fclose(in);
 291 }
 292
 293 static void mkdir_if_missing(const char *pathname, mode_t mode)
 294 {
 295         struct stat st;
 296
 297         if (!mkdir(pathname, mode))
 298                 return;
 299
 300         if (errno != EEXIST)
 301                 die_errno(_("failed to create directory '%s'"), pathname);
 302         else if (stat(pathname, &st))
 303                 die_errno(_("failed to stat '%s'"), pathname);
 304         else if (!S_ISDIR(st.st_mode))
 305                 die(_("%s exists and is not a directory"), pathname);
 306 }
 307
 308 static void copy_or_link_directory(struct strbuf *src, struct strbuf *dest,
 309                                    const char *src_repo)
 310 {
 311         int src_len, dest_len;
 312         struct dir_iterator *iter;
 313         int iter_status;
 314         unsigned int flags;
 315         struct strbuf realpath = STRBUF_INIT;
 316
 317         mkdir_if_missing(dest->buf, 0777);
 318
 319         flags = DIR_ITERATOR_PEDANTIC | DIR_ITERATOR_FOLLOW_SYMLINKS;
 320         iter = dir_iterator_begin(src->buf, flags);
 321
 322         if (!iter)
 323                 die_errno(_("failed to start iterator over '%s'"), src->buf);
 324
 325         strbuf_addch(src, '/');
 326         src_len = src->len;
 327         strbuf_addch(dest, '/');
 328         dest_len = dest->len;
 329
 330         while ((iter_status = dir_iterator_advance(iter)) == ITER_OK) {
 331                 strbuf_setlen(src, src_len);
 332                 strbuf_addstr(src, iter->relative_path);
 333                 strbuf_setlen(dest, dest_len);
 334                 strbuf_addstr(dest, iter->relative_path);
 335
 336                 if (S_ISDIR(iter->st.st_mode)) {
 337                         mkdir_if_missing(dest->buf, 0777);
 338                         continue;
 339                 }
 340
 341                 /* Files that cannot be copied bit-for-bit... */
 342                 if (!fspathcmp(iter->relative_path, "info/alternates")) {
 343                         copy_alternates(src, src_repo);
 344                         continue;
 345                 }
 346
 347                 if (unlink(dest->buf) && errno != ENOENT)
 348                         die_errno(_("failed to unlink '%s'"), dest->buf);
 349                 if (!option_no_hardlinks) {
 350                         strbuf_realpath(&realpath, src->buf, 1);
 351                         if (!link(realpath.buf, dest->buf))
 352                                 continue;
 353                         if (option_local > 0)
 354                                 die_errno(_("failed to create link '%s'"), dest->buf);
 355                         option_no_hardlinks = 1;
 356                 }
 357                 if (copy_file_with_time(dest->buf, src->buf, 0666))
 358                         die_errno(_("failed to copy file to '%s'"), dest->buf);
 359         }
 360
 361         if (iter_status != ITER_DONE) {
 362                 strbuf_setlen(src, src_len);
 363                 die(_("failed to iterate over '%s'"), src->buf);
 364         }
 365
 366         strbuf_release(&realpath);
 367 }
 368
 369 static void clone_local(const char *src_repo, const char *dest_repo)
 370 {
 371         if (option_shared) {
 372                 struct strbuf alt = STRBUF_INIT;
 373                 get_common_dir(&alt, src_repo);
 374                 strbuf_addstr(&alt, "/objects");
 375                 add_to_alternates_file(alt.buf);
 376                 strbuf_release(&alt);
 377         } else {
 378                 struct strbuf src = STRBUF_INIT;
 379                 struct strbuf dest = STRBUF_INIT;
 380                 get_common_dir(&src, src_repo);
 381                 get_common_dir(&dest, dest_repo);
 382                 strbuf_addstr(&src, "/objects");
 383                 strbuf_addstr(&dest, "/objects");
 384                 copy_or_link_directory(&src, &dest, src_repo);
 385                 strbuf_release(&src);
 386                 strbuf_release(&dest);
 387         }
 388
 389         if (0 <= option_verbosity)
 390                 fprintf(stderr, _("done.\n"));
 391 }
 392
 393 static const char *junk_work_tree;
 394 static int junk_work_tree_flags;
 395 static const char *junk_git_dir;
 396 static int junk_git_dir_flags;
 397 static enum {
 398         JUNK_LEAVE_NONE,
 399         JUNK_LEAVE_REPO,
 400         JUNK_LEAVE_ALL
 401 } junk_mode = JUNK_LEAVE_NONE;
 402
 403 static const char junk_leave_repo_msg[] =
 404 N_("Clone succeeded, but checkout failed.\n"
 405    "You can inspect what was checked out with 'git status'\n"
 406    "and retry with 'git restore --source=HEAD :/'\n");
 407
 408 static void remove_junk(void)
 409 {
 410         struct strbuf sb = STRBUF_INIT;
 411
 412         switch (junk_mode) {
 413         case JUNK_LEAVE_REPO:
 414                 warning("%s", _(junk_leave_repo_msg));
 415                 /* fall-through */
 416         case JUNK_LEAVE_ALL:
 417                 return;
 418         default:
 419                 /* proceed to removal */
 420                 break;
 421         }
 422
 423         if (junk_git_dir) {
 424                 strbuf_addstr(&sb, junk_git_dir);
 425                 remove_dir_recursively(&sb, junk_git_dir_flags);
 426                 strbuf_reset(&sb);
 427         }
 428         if (junk_work_tree) {
 429                 strbuf_addstr(&sb, junk_work_tree);
 430                 remove_dir_recursively(&sb, junk_work_tree_flags);
 431         }
 432         strbuf_release(&sb);
 433 }
 434
 435 static void remove_junk_on_signal(int signo)
 436 {
 437         remove_junk();
 438         sigchain_pop(signo);
 439         raise(signo);
 440 }
 441
 442 static struct ref *find_remote_branch(const struct ref *refs, const char *branch)
 443 {
 444         struct ref *ref;
 445         struct strbuf head = STRBUF_INIT;
 446         strbuf_addstr(&head, "refs/heads/");
 447         strbuf_addstr(&head, branch);
 448         ref = find_ref_by_name(refs, head.buf);
 449         strbuf_release(&head);
 450
 451         if (ref)
 452                 return ref;
 453
 454         strbuf_addstr(&head, "refs/tags/");
 455         strbuf_addstr(&head, branch);
 456         ref = find_ref_by_name(refs, head.buf);
 457         strbuf_release(&head);
 458
 459         return ref;
 460 }
 461
 462 static struct ref *wanted_peer_refs(const struct ref *refs,
 463                 struct refspec *refspec)
 464 {
 465         struct ref *head = copy_ref(find_ref_by_name(refs, "HEAD"));
 466         struct ref *local_refs = head;
 467         struct ref **tail = head ? &head->next : &local_refs;
 468
 469         if (option_single_branch) {
 470                 struct ref *remote_head = NULL;
 471
 472                 if (!option_branch)
 473                         remote_head = guess_remote_head(head, refs, 0);
 474                 else {
 475                         local_refs = NULL;
 476                         tail = &local_refs;
 477                         remote_head = copy_ref(find_remote_branch(refs, option_branch));
 478                 }
 479
 480                 if (!remote_head && option_branch)
 481                         warning(_("Could not find remote branch %s to clone."),
 482                                 option_branch);
 483                 else {
 484                         int i;
 485                         for (i = 0; i < refspec->nr; i++)
 486                                 get_fetch_map(remote_head, &refspec->items[i],
 487                                               &tail, 0);
 488
 489                         /* if --branch=tag, pull the requested tag explicitly */
 490                         get_fetch_map(remote_head, tag_refspec, &tail, 0);
 491                 }
 492         } else {
 493                 int i;
 494                 for (i = 0; i < refspec->nr; i++)
 495                         get_fetch_map(refs, &refspec->items[i], &tail, 0);
 496         }
 497
 498         if (!option_mirror && !option_single_branch && !option_no_tags)
 499                 get_fetch_map(refs, tag_refspec, &tail, 0);
 500
 501         return local_refs;
 502 }
 503
 504 static void write_remote_refs(const struct ref *local_refs)
 505 {
 506         const struct ref *r;
 507
 508         struct ref_transaction *t;
 509         struct strbuf err = STRBUF_INIT;
 510
 511         t = ref_transaction_begin(&err);
 512         if (!t)
 513                 die("%s", err.buf);
 514
 515         for (r = local_refs; r; r = r->next) {
 516                 if (!r->peer_ref)
 517                         continue;
 518                 if (ref_transaction_create(t, r->peer_ref->name, &r->old_oid,
 519                                            0, NULL, &err))
 520                         die("%s", err.buf);
 521         }
 522
 523         if (initial_ref_transaction_commit(t, &err))
 524                 die("%s", err.buf);
 525
 526         strbuf_release(&err);
 527         ref_transaction_free(t);
 528 }
 529
 530 static void write_followtags(const struct ref *refs, const char *msg)
 531 {
 532         const struct ref *ref;
 533         for (ref = refs; ref; ref = ref->next) {
 534                 if (!starts_with(ref->name, "refs/tags/"))
 535                         continue;
 536                 if (ends_with(ref->name, "^{}"))
 537                         continue;
 538                 if (!has_object_file_with_flags(&ref->old_oid,
 539                                                 OBJECT_INFO_QUICK |
 540                                                 OBJECT_INFO_SKIP_FETCH_OBJECT))
 541                         continue;
 542                 update_ref(msg, ref->name, &ref->old_oid, NULL, 0,
 543                            UPDATE_REFS_DIE_ON_ERR);
 544         }
 545 }
 546
 547 static const struct object_id *iterate_ref_map(void *cb_data)
 548 {
 549         struct ref **rm = cb_data;
 550         struct ref *ref = *rm;
 551
 552         /*
 553          * Skip anything missing a peer_ref, which we are not
 554          * actually going to write a ref for.
 555          */
 556         while (ref && !ref->peer_ref)
 557                 ref = ref->next;
 558         if (!ref)
 559                 return NULL;
 560
 561         *rm = ref->next;
 562         return &ref->old_oid;
 563 }
 564
 565 static void update_remote_refs(const struct ref *refs,
 566                                const struct ref *mapped_refs,
 567                                const struct ref *remote_head_points_at,
 568                                const char *branch_top,
 569                                const char *msg,
 570                                struct transport *transport,
 571                                int check_connectivity)
 572 {
 573         const struct ref *rm = mapped_refs;
 574
 575         if (check_connectivity) {
 576                 struct check_connected_options opt = CHECK_CONNECTED_INIT;
 577
 578                 opt.transport = transport;
 579                 opt.progress = transport->progress;
 580
 581                 if (check_connected(iterate_ref_map, &rm, &opt))
 582                         die(_("remote did not send all necessary objects"));
 583         }
 584
 585         if (refs) {
 586                 write_remote_refs(mapped_refs);
 587                 if (option_single_branch && !option_no_tags)
 588                         write_followtags(refs, msg);
 589         }
 590
 591         if (remote_head_points_at && !option_bare) {
 592                 struct strbuf head_ref = STRBUF_INIT;
 593                 strbuf_addstr(&head_ref, branch_top);
 594                 strbuf_addstr(&head_ref, "HEAD");
 595                 if (create_symref(head_ref.buf,
 596                                   remote_head_points_at->peer_ref->name,
 597                                   msg) < 0)
 598                         die(_("unable to update %s"), head_ref.buf);
 599                 strbuf_release(&head_ref);
 600         }
 601 }
 602
 603 static void update_head(const struct ref *our, const struct ref *remote,
 604                         const char *msg)
 605 {
 606         const char *head;
 607         if (our && skip_prefix(our->name, "refs/heads/", &head)) {
 608                 /* Local default branch link */
 609                 if (create_symref("HEAD", our->name, NULL) < 0)
 610                         die(_("unable to update HEAD"));
 611                 if (!option_bare) {
 612                         update_ref(msg, "HEAD", &our->old_oid, NULL, 0,
 613                                    UPDATE_REFS_DIE_ON_ERR);
 614                         install_branch_config(0, head, remote_name, our->name);
 615                 }
 616         } else if (our) {
 617                 struct commit *c = lookup_commit_reference(the_repository,
 618                                                            &our->old_oid);
 619                 /* --branch specifies a non-branch (i.e. tags), detach HEAD */
 620                 update_ref(msg, "HEAD", &c->object.oid, NULL, REF_NO_DEREF,
 621                            UPDATE_REFS_DIE_ON_ERR);
 622         } else if (remote) {
 623                 /*
 624                  * We know remote HEAD points to a non-branch, or
 625                  * HEAD points to a branch but we don't know which one.
 626                  * Detach HEAD in all these cases.
 627                  */
 628                 update_ref(msg, "HEAD", &remote->old_oid, NULL, REF_NO_DEREF,
 629                            UPDATE_REFS_DIE_ON_ERR);
 630         }
 631 }
 632
 633 static int git_sparse_checkout_init(const char *repo)
 634 {
 635         struct strvec argv = STRVEC_INIT;
 636         int result = 0;
 637         strvec_pushl(&argv, "-C", repo, "sparse-checkout", "set", NULL);
 638
 639         /*
 640          * We must apply the setting in the current process
 641          * for the later checkout to use the sparse-checkout file.
 642          */
 643         core_apply_sparse_checkout = 1;
 644
 645         if (run_command_v_opt(argv.v, RUN_GIT_CMD)) {
 646                 error(_("failed to initialize sparse-checkout"));
 647                 result = 1;
 648         }
 649
 650         strvec_clear(&argv);
 651         return result;
 652 }
 653
 654 static int checkout(int submodule_progress)
 655 {
 656         struct object_id oid;
 657         char *head;
 658         struct lock_file lock_file = LOCK_INIT;
 659         struct unpack_trees_options opts;
 660         struct tree *tree;
 661         struct tree_desc t;
 662         int err = 0;
 663
 664         if (option_no_checkout)
 665                 return 0;
 666
 667         head = resolve_refdup("HEAD", RESOLVE_REF_READING, &oid, NULL);
 668         if (!head) {
 669                 warning(_("remote HEAD refers to nonexistent ref, "
 670                           "unable to checkout.\n"));
 671                 return 0;
 672         }
 673         if (!strcmp(head, "HEAD")) {
 674                 if (advice_enabled(ADVICE_DETACHED_HEAD))
 675                         detach_advice(oid_to_hex(&oid));
 676                 FREE_AND_NULL(head);
 677         } else {
 678                 if (!starts_with(head, "refs/heads/"))
 679                         die(_("HEAD not found below refs/heads!"));
 680         }
 681
 682         /* We need to be in the new work tree for the checkout */
 683         setup_work_tree();
 684
 685         hold_locked_index(&lock_file, LOCK_DIE_ON_ERROR);
 686
 687         memset(&opts, 0, sizeof opts);
 688         opts.update = 1;
 689         opts.merge = 1;
 690         opts.clone = 1;
 691         opts.preserve_ignored = 0;
 692         opts.fn = oneway_merge;
 693         opts.verbose_update = (option_verbosity >= 0);
 694         opts.src_index = &the_index;
 695         opts.dst_index = &the_index;
 696         init_checkout_metadata(&opts.meta, head, &oid, NULL);
 697
 698         tree = parse_tree_indirect(&oid);
 699         parse_tree(tree);
 700         init_tree_desc(&t, tree->buffer, tree->size);
 701         if (unpack_trees(1, &t, &opts) < 0)
 702                 die(_("unable to checkout working tree"));
 703
 704         free(head);
 705
 706         if (write_locked_index(&the_index, &lock_file, COMMIT_LOCK))
 707                 die(_("unable to write new index file"));
 708
 709         err |= run_hooks_l("post-checkout", oid_to_hex(null_oid()),
 710                            oid_to_hex(&oid), "1", NULL);
 711
 712         if (!err && (option_recurse_submodules.nr > 0)) {
 713                 struct strvec args = STRVEC_INIT;
 714                 strvec_pushl(&args, "submodule", "update", "--require-init", "--recursive", NULL);
 715
 716                 if (option_shallow_submodules == 1)
 717                         strvec_push(&args, "--depth=1");
 718
 719                 if (max_jobs != -1)
 720                         strvec_pushf(&args, "--jobs=%d", max_jobs);
 721
 722                 if (submodule_progress)
 723                         strvec_push(&args, "--progress");
 724
 725                 if (option_verbosity < 0)
 726                         strvec_push(&args, "--quiet");
 727
 728                 if (option_remote_submodules) {
 729                         strvec_push(&args, "--remote");
 730                         strvec_push(&args, "--no-fetch");
 731                 }
 732
 733                 if (option_single_branch >= 0)
 734                         strvec_push(&args, option_single_branch ?
 735                                                "--single-branch" :
 736                                                "--no-single-branch");
 737
 738                 err = run_command_v_opt(args.v, RUN_GIT_CMD);
 739                 strvec_clear(&args);
 740         }
 741
 742         return err;
 743 }
 744
 745 static int git_clone_config(const char *k, const char *v, void *cb)
 746 {
 747         if (!strcmp(k, "clone.defaultremotename")) {
 748                 free(remote_name);
 749                 remote_name = xstrdup(v);
 750         }
 751         if (!strcmp(k, "clone.rejectshallow"))
 752                 config_reject_shallow = git_config_bool(k, v);
 753
 754         return git_default_config(k, v, cb);
 755 }
 756
 757 static int write_one_config(const char *key, const char *value, void *data)
 758 {
 759         /*
 760          * give git_clone_config a chance to write config values back to the
 761          * environment, since git_config_set_multivar_gently only deals with
 762          * config-file writes
 763          */
 764         int apply_failed = git_clone_config(key, value, data);
 765         if (apply_failed)
 766                 return apply_failed;
 767
 768         return git_config_set_multivar_gently(key,
 769                                               value ? value : "true",
 770                                               CONFIG_REGEX_NONE, 0);
 771 }
 772
 773 static void write_config(struct string_list *config)
 774 {
 775         int i;
 776
 777         for (i = 0; i < config->nr; i++) {
 778                 if (git_config_parse_parameter(config->items[i].string,
 779                                                write_one_config, NULL) < 0)
 780                         die(_("unable to write parameters to config file"));
 781         }
 782 }
 783
 784 static void write_refspec_config(const char *src_ref_prefix,
 785                 const struct ref *our_head_points_at,
 786                 const struct ref *remote_head_points_at,
 787                 struct strbuf *branch_top)
 788 {
 789         struct strbuf key = STRBUF_INIT;
 790         struct strbuf value = STRBUF_INIT;
 791
 792         if (option_mirror || !option_bare) {
 793                 if (option_single_branch && !option_mirror) {
 794                         if (option_branch) {
 795                                 if (starts_with(our_head_points_at->name, "refs/tags/"))
 796                                         strbuf_addf(&value, "+%s:%s", our_head_points_at->name,
 797                                                 our_head_points_at->name);
 798                                 else
 799                                         strbuf_addf(&value, "+%s:%s%s", our_head_points_at->name,
 800                                                 branch_top->buf, option_branch);
 801                         } else if (remote_head_points_at) {
 802                                 const char *head = remote_head_points_at->name;
 803                                 if (!skip_prefix(head, "refs/heads/", &head))
 804                                         BUG("remote HEAD points at non-head?");
 805
 806                                 strbuf_addf(&value, "+%s:%s%s", remote_head_points_at->name,
 807                                                 branch_top->buf, head);
 808                         }
 809                         /*
 810                          * otherwise, the next "git fetch" will
 811                          * simply fetch from HEAD without updating
 812                          * any remote-tracking branch, which is what
 813                          * we want.
 814                          */
 815                 } else {
 816                         strbuf_addf(&value, "+%s*:%s*", src_ref_prefix, branch_top->buf);
 817                 }
 818                 /* Configure the remote */
 819                 if (value.len) {
 820                         strbuf_addf(&key, "remote.%s.fetch", remote_name);
 821                         git_config_set_multivar(key.buf, value.buf, "^$", 0);
 822                         strbuf_reset(&key);
 823
 824                         if (option_mirror) {
 825                                 strbuf_addf(&key, "remote.%s.mirror", remote_name);
 826                                 git_config_set(key.buf, "true");
 827                                 strbuf_reset(&key);
 828                         }
 829                 }
 830         }
 831
 832         strbuf_release(&key);
 833         strbuf_release(&value);
 834 }
 835
 836 static void dissociate_from_references(void)
 837 {
 838         static const char* argv[] = { "repack", "-a", "-d", NULL };
 839         char *alternates = git_pathdup("objects/info/alternates");
 840
 841         if (!access(alternates, F_OK)) {
 842                 if (run_command_v_opt(argv, RUN_GIT_CMD|RUN_COMMAND_NO_STDIN))
 843                         die(_("cannot repack to clean up"));
 844                 if (unlink(alternates) && errno != ENOENT)
 845                         die_errno(_("cannot unlink temporary alternates file"));
 846         }
 847         free(alternates);
 848 }
 849
 850 static int path_exists(const char *path)
 851 {
 852         struct stat sb;
 853         return !stat(path, &sb);
 854 }
 855
 856 int cmd_clone(int argc, const char **argv, const char *prefix)
 857 {
 858         int is_bundle = 0, is_local;
 859         int reject_shallow = 0;
 860         const char *repo_name, *repo, *work_tree, *git_dir;
 861         char *path = NULL, *dir, *display_repo = NULL;
 862         int dest_exists, real_dest_exists = 0;
 863         const struct ref *refs, *remote_head;
 864         struct ref *remote_head_points_at = NULL;
 865         const struct ref *our_head_points_at;
 866         struct ref *mapped_refs = NULL;
 867         const struct ref *ref;
 868         struct strbuf key = STRBUF_INIT;
 869         struct strbuf branch_top = STRBUF_INIT, reflog_msg = STRBUF_INIT;
 870         struct transport *transport = NULL;
 871         const char *src_ref_prefix = "refs/heads/";
 872         struct remote *remote;
 873         int err = 0, complete_refs_before_fetch = 1;
 874         int submodule_progress;
 875
 876         struct transport_ls_refs_options transport_ls_refs_options =
 877                 TRANSPORT_LS_REFS_OPTIONS_INIT;
 878
 879         packet_trace_identity("clone");
 880
 881         git_config(git_clone_config, NULL);
 882
 883         argc = parse_options(argc, argv, prefix, builtin_clone_options,
 884                              builtin_clone_usage, 0);
 885
 886         if (argc > 2)
 887                 usage_msg_opt(_("Too many arguments."),
 888                         builtin_clone_usage, builtin_clone_options);
 889
 890         if (argc == 0)
 891                 usage_msg_opt(_("You must specify a repository to clone."),
 892                         builtin_clone_usage, builtin_clone_options);
 893
 894         if (option_depth || option_since || option_not.nr)
 895                 deepen = 1;
 896         if (option_single_branch == -1)
 897                 option_single_branch = deepen ? 1 : 0;
 898
 899         if (option_mirror)
 900                 option_bare = 1;
 901
 902         if (option_bare) {
 903                 if (option_origin)
 904                         die(_("options '%s' and '%s %s' cannot be used together"),
 905                             "--bare", "--origin", option_origin);
 906                 if (real_git_dir)
 907                         die(_("options '%s' and '%s' cannot be used together"), "--bare", "--separate-git-dir");
 908                 option_no_checkout = 1;
 909         }
 910
 911         repo_name = argv[0];
 912
 913         path = get_repo_path(repo_name, &is_bundle);
 914         if (path) {
 915                 FREE_AND_NULL(path);
 916                 repo = absolute_pathdup(repo_name);
 917         } else if (strchr(repo_name, ':')) {
 918                 repo = repo_name;
 919                 display_repo = transport_anonymize_url(repo);
 920         } else
 921                 die(_("repository '%s' does not exist"), repo_name);
 922
 923         /* no need to be strict, transport_set_option() will validate it again */
 924         if (option_depth && atoi(option_depth) < 1)
 925                 die(_("depth %s is not a positive number"), option_depth);
 926
 927         if (argc == 2)
 928                 dir = xstrdup(argv[1]);
 929         else
 930                 dir = git_url_basename(repo_name, is_bundle, option_bare);
 931         strip_dir_trailing_slashes(dir);
 932
 933         dest_exists = path_exists(dir);
 934         if (dest_exists && !is_empty_dir(dir))
 935                 die(_("destination path '%s' already exists and is not "
 936                         "an empty directory."), dir);
 937
 938         if (real_git_dir) {
 939                 real_dest_exists = path_exists(real_git_dir);
 940                 if (real_dest_exists && !is_empty_dir(real_git_dir))
 941                         die(_("repository path '%s' already exists and is not "
 942                                 "an empty directory."), real_git_dir);
 943         }
 944
 945
 946         strbuf_addf(&reflog_msg, "clone: from %s",
 947                     display_repo ? display_repo : repo);
 948         free(display_repo);
 949
 950         if (option_bare)
 951                 work_tree = NULL;
 952         else {
 953                 work_tree = getenv("GIT_WORK_TREE");
 954                 if (work_tree && path_exists(work_tree))
 955                         die(_("working tree '%s' already exists."), work_tree);
 956         }
 957
 958         if (option_bare || work_tree)
 959                 git_dir = xstrdup(dir);
 960         else {
 961                 work_tree = dir;
 962                 git_dir = mkpathdup("%s/.git", dir);
 963         }
 964
 965         atexit(remove_junk);
 966         sigchain_push_common(remove_junk_on_signal);
 967
 968         if (!option_bare) {
 969                 if (safe_create_leading_directories_const(work_tree) < 0)
 970                         die_errno(_("could not create leading directories of '%s'"),
 971                                   work_tree);
 972                 if (dest_exists)
 973                         junk_work_tree_flags |= REMOVE_DIR_KEEP_TOPLEVEL;
 974                 else if (mkdir(work_tree, 0777))
 975                         die_errno(_("could not create work tree dir '%s'"),
 976                                   work_tree);
 977                 junk_work_tree = work_tree;
 978                 set_git_work_tree(work_tree);
 979         }
 980
 981         if (real_git_dir) {
 982                 if (real_dest_exists)
 983                         junk_git_dir_flags |= REMOVE_DIR_KEEP_TOPLEVEL;
 984                 junk_git_dir = real_git_dir;
 985         } else {
 986                 if (dest_exists)
 987                         junk_git_dir_flags |= REMOVE_DIR_KEEP_TOPLEVEL;
 988                 junk_git_dir = git_dir;
 989         }
 990         if (safe_create_leading_directories_const(git_dir) < 0)
 991                 die(_("could not create leading directories of '%s'"), git_dir);
 992
 993         if (0 <= option_verbosity) {
 994                 if (option_bare)
 995                         fprintf(stderr, _("Cloning into bare repository '%s'...\n"), dir);
 996                 else
 997                         fprintf(stderr, _("Cloning into '%s'...\n"), dir);
 998         }
 999
1000         if (option_recurse_submodules.nr > 0) {
1001                 struct string_list_item *item;
1002                 struct strbuf sb = STRBUF_INIT;
1003                 int val;
1004
1005                 /* remove duplicates */
1006                 string_list_sort(&option_recurse_submodules);
1007                 string_list_remove_duplicates(&option_recurse_submodules, 0);
1008
1009                 /*
1010                  * NEEDSWORK: In a multi-working-tree world, this needs to be
1011                  * set in the per-worktree config.
1012                  */
1013                 for_each_string_list_item(item, &option_recurse_submodules) {
1014                         strbuf_addf(&sb, "submodule.active=%s",
1015                                     item->string);
1016                         string_list_append(&option_config,
1017                                            strbuf_detach(&sb, NULL));
1018                 }
1019
1020                 if (!git_config_get_bool("submodule.stickyRecursiveClone", &val) &&
1021                     val)
1022                         string_list_append(&option_config, "submodule.recurse=true");
1023
1024                 if (option_required_reference.nr &&
1025                     option_optional_reference.nr)
1026                         die(_("clone --recursive is not compatible with "
1027                               "both --reference and --reference-if-able"));
1028                 else if (option_required_reference.nr) {
1029                         string_list_append(&option_config,
1030                                 "submodule.alternateLocation=superproject");
1031                         string_list_append(&option_config,
1032                                 "submodule.alternateErrorStrategy=die");
1033                 } else if (option_optional_reference.nr) {
1034                         string_list_append(&option_config,
1035                                 "submodule.alternateLocation=superproject");
1036                         string_list_append(&option_config,
1037                                 "submodule.alternateErrorStrategy=info");
1038                 }
1039         }
1040
1041         init_db(git_dir, real_git_dir, option_template, GIT_HASH_UNKNOWN, NULL,
1042                 INIT_DB_QUIET);
1043
1044         if (real_git_dir) {
1045                 free((char *)git_dir);
1046                 git_dir = real_git_dir;
1047         }
1048
1049         /*
1050          * additional config can be injected with -c, make sure it's included
1051          * after init_db, which clears the entire config environment.
1052          */
1053         write_config(&option_config);
1054
1055         /*
1056          * re-read config after init_db and write_config to pick up any config
1057          * injected by --template and --config, respectively.
1058          */
1059         git_config(git_clone_config, NULL);
1060
1061         /*
1062          * If option_reject_shallow is specified from CLI option,
1063          * ignore config_reject_shallow from git_clone_config.
1064          */
1065         if (config_reject_shallow != -1)
1066                 reject_shallow = config_reject_shallow;
1067         if (option_reject_shallow != -1)
1068                 reject_shallow = option_reject_shallow;
1069
1070         /*
1071          * apply the remote name provided by --origin only after this second
1072          * call to git_config, to ensure it overrides all config-based values.
1073          */
1074         if (option_origin != NULL)
1075                 remote_name = xstrdup(option_origin);
1076
1077         if (remote_name == NULL)
1078                 remote_name = xstrdup("origin");
1079
1080         if (!valid_remote_name(remote_name))
1081                 die(_("'%s' is not a valid remote name"), remote_name);
1082
1083         if (option_bare) {
1084                 if (option_mirror)
1085                         src_ref_prefix = "refs/";
1086                 strbuf_addstr(&branch_top, src_ref_prefix);
1087
1088                 git_config_set("core.bare", "true");
1089         } else {
1090                 strbuf_addf(&branch_top, "refs/remotes/%s/", remote_name);
1091         }
1092
1093         strbuf_addf(&key, "remote.%s.url", remote_name);
1094         git_config_set(key.buf, repo);
1095         strbuf_reset(&key);
1096
1097         if (option_no_tags) {
1098                 strbuf_addf(&key, "remote.%s.tagOpt", remote_name);
1099                 git_config_set(key.buf, "--no-tags");
1100                 strbuf_reset(&key);
1101         }
1102
1103         if (option_required_reference.nr || option_optional_reference.nr)
1104                 setup_reference();
1105
1106         if (option_sparse_checkout && git_sparse_checkout_init(dir))
1107                 return 1;
1108
1109         remote = remote_get(remote_name);
1110
1111         refspec_appendf(&remote->fetch, "+%s*:%s*", src_ref_prefix,
1112                         branch_top.buf);
1113
1114         transport = transport_get(remote, remote->url[0]);
1115         transport_set_verbosity(transport, option_verbosity, option_progress);
1116         transport->family = family;
1117
1118         path = get_repo_path(remote->url[0], &is_bundle);
1119         is_local = option_local != 0 && path && !is_bundle;
1120         if (is_local) {
1121                 if (option_depth)
1122                         warning(_("--depth is ignored in local clones; use file:// instead."));
1123                 if (option_since)
1124                         warning(_("--shallow-since is ignored in local clones; use file:// instead."));
1125                 if (option_not.nr)
1126                         warning(_("--shallow-exclude is ignored in local clones; use file:// instead."));
1127                 if (filter_options.choice)
1128                         warning(_("--filter is ignored in local clones; use file:// instead."));
1129                 if (!access(mkpath("%s/shallow", path), F_OK)) {
1130                         if (reject_shallow)
1131                                 die(_("source repository is shallow, reject to clone."));
1132                         if (option_local > 0)
1133                                 warning(_("source repository is shallow, ignoring --local"));
1134                         is_local = 0;
1135                 }
1136         }
1137         if (option_local > 0 && !is_local)
1138                 warning(_("--local is ignored"));
1139         transport->cloning = 1;
1140
1141         transport_set_option(transport, TRANS_OPT_KEEP, "yes");
1142
1143         if (reject_shallow)
1144                 transport_set_option(transport, TRANS_OPT_REJECT_SHALLOW, "1");
1145         if (option_depth)
1146                 transport_set_option(transport, TRANS_OPT_DEPTH,
1147                                      option_depth);
1148         if (option_since)
1149                 transport_set_option(transport, TRANS_OPT_DEEPEN_SINCE,
1150                                      option_since);
1151         if (option_not.nr)
1152                 transport_set_option(transport, TRANS_OPT_DEEPEN_NOT,
1153                                      (const char *)&option_not);
1154         if (option_single_branch)
1155                 transport_set_option(transport, TRANS_OPT_FOLLOWTAGS, "1");
1156
1157         if (option_upload_pack)
1158                 transport_set_option(transport, TRANS_OPT_UPLOADPACK,
1159                                      option_upload_pack);
1160
1161         if (server_options.nr)
1162                 transport->server_options = &server_options;
1163
1164         if (filter_options.choice) {
1165                 const char *spec =
1166                         expand_list_objects_filter_spec(&filter_options);
1167                 transport_set_option(transport, TRANS_OPT_LIST_OBJECTS_FILTER,
1168                                      spec);
1169                 transport_set_option(transport, TRANS_OPT_FROM_PROMISOR, "1");
1170         }
1171
1172         if (transport->smart_options && !deepen && !filter_options.choice)
1173                 transport->smart_options->check_self_contained_and_connected = 1;
1174
1175
1176         strvec_push(&transport_ls_refs_options.ref_prefixes, "HEAD");
1177         refspec_ref_prefixes(&remote->fetch,
1178                              &transport_ls_refs_options.ref_prefixes);
1179         if (option_branch)
1180                 expand_ref_prefix(&transport_ls_refs_options.ref_prefixes,
1181                                   option_branch);
1182         if (!option_no_tags)
1183                 strvec_push(&transport_ls_refs_options.ref_prefixes,
1184                             "refs/tags/");
1185
1186         refs = transport_get_remote_refs(transport, &transport_ls_refs_options);
1187
1188         if (refs)
1189                 mapped_refs = wanted_peer_refs(refs, &remote->fetch);
1190
1191         if (mapped_refs) {
1192                 int hash_algo = hash_algo_by_ptr(transport_get_hash_algo(transport));
1193
1194                 /*
1195                  * Now that we know what algorithm the remote side is using,
1196                  * let's set ours to the same thing.
1197                  */
1198                 initialize_repository_version(hash_algo, 1);
1199                 repo_set_hash_algo(the_repository, hash_algo);
1200                 /*
1201                  * transport_get_remote_refs() may return refs with null sha-1
1202                  * in mapped_refs (see struct transport->get_refs_list
1203                  * comment). In that case we need fetch it early because
1204                  * remote_head code below relies on it.
1205                  *
1206                  * for normal clones, transport_get_remote_refs() should
1207                  * return reliable ref set, we can delay cloning until after
1208                  * remote HEAD check.
1209                  */
1210                 for (ref = refs; ref; ref = ref->next)
1211                         if (is_null_oid(&ref->old_oid)) {
1212                                 complete_refs_before_fetch = 0;
1213                                 break;
1214                         }
1215
1216                 if (!is_local && !complete_refs_before_fetch) {
1217                         if (transport_fetch_refs(transport, mapped_refs))
1218                                 die(_("remote transport reported error"));
1219                 }
1220
1221                 remote_head = find_ref_by_name(refs, "HEAD");
1222                 remote_head_points_at =
1223                         guess_remote_head(remote_head, mapped_refs, 0);
1224
1225                 if (option_branch) {
1226                         our_head_points_at =
1227                                 find_remote_branch(mapped_refs, option_branch);
1228
1229                         if (!our_head_points_at)
1230                                 die(_("Remote branch %s not found in upstream %s"),
1231                                     option_branch, remote_name);
1232                 }
1233                 else
1234                         our_head_points_at = remote_head_points_at;
1235         }
1236         else {
1237                 const char *branch;
1238                 char *ref;
1239
1240                 if (option_branch)
1241                         die(_("Remote branch %s not found in upstream %s"),
1242                                         option_branch, remote_name);
1243
1244                 warning(_("You appear to have cloned an empty repository."));
1245                 our_head_points_at = NULL;
1246                 remote_head_points_at = NULL;
1247                 remote_head = NULL;
1248                 option_no_checkout = 1;
1249
1250                 if (transport_ls_refs_options.unborn_head_target &&
1251                     skip_prefix(transport_ls_refs_options.unborn_head_target,
1252                                 "refs/heads/", &branch)) {
1253                         ref = transport_ls_refs_options.unborn_head_target;
1254                         transport_ls_refs_options.unborn_head_target = NULL;
1255                         create_symref("HEAD", ref, reflog_msg.buf);
1256                 } else {
1257                         branch = git_default_branch_name(0);
1258                         ref = xstrfmt("refs/heads/%s", branch);
1259                 }
1260
1261                 if (!option_bare)
1262                         install_branch_config(0, branch, remote_name, ref);
1263
1264                 free(ref);
1265         }
1266
1267         write_refspec_config(src_ref_prefix, our_head_points_at,
1268                         remote_head_points_at, &branch_top);
1269
1270         if (filter_options.choice)
1271                 partial_clone_register(remote_name, &filter_options);
1272
1273         if (is_local)
1274                 clone_local(path, git_dir);
1275         else if (mapped_refs && complete_refs_before_fetch) {
1276                 if (transport_fetch_refs(transport, mapped_refs))
1277                         die(_("remote transport reported error"));
1278         }
1279
1280         update_remote_refs(refs, mapped_refs, remote_head_points_at,
1281                            branch_top.buf, reflog_msg.buf, transport,
1282                            !is_local);
1283
1284         update_head(our_head_points_at, remote_head, reflog_msg.buf);
1285
1286         /*
1287          * We want to show progress for recursive submodule clones iff
1288          * we did so for the main clone. But only the transport knows
1289          * the final decision for this flag, so we need to rescue the value
1290          * before we free the transport.
1291          */
1292         submodule_progress = transport->progress;
1293
1294         transport_unlock_pack(transport, 0);
1295         transport_disconnect(transport);
1296
1297         if (option_dissociate) {
1298                 close_object_store(the_repository->objects);
1299                 dissociate_from_references();
1300         }
1301
1302         junk_mode = JUNK_LEAVE_REPO;
1303         err = checkout(submodule_progress);
1304
1305         free(remote_name);
1306         strbuf_release(&reflog_msg);
1307         strbuf_release(&branch_top);
1308         strbuf_release(&key);
1309         free_refs(mapped_refs);
1310         free_refs(remote_head_points_at);
1311         free(dir);
1312         free(path);
1313         UNLEAK(repo);
1314         junk_mode = JUNK_LEAVE_ALL;
1315
1316         strvec_clear(&transport_ls_refs_options.ref_prefixes);
1317         free(transport_ls_refs_options.unborn_head_target);
1318         return err;
1319 }