pager: set LESS=FRSX also on Windows
[git/dscho.git] / builtin-fetch.c
blob817dd6bff0bf0ddc9a3d00191bb3c422300b878b
1 /*
2  * "git fetch"
3  */
4 #include "cache.h"
5 #include "refs.h"
6 #include "commit.h"
7 #include "builtin.h"
8 #include "string-list.h"
9 #include "remote.h"
10 #include "transport.h"
11 #include "run-command.h"
12 #include "parse-options.h"
13 #include "sigchain.h"
15 static const char * const builtin_fetch_usage[] = {
16         "git fetch [options] [<repository> <refspec>...]",
17         NULL
20 enum {
21         TAGS_UNSET = 0,
22         TAGS_DEFAULT = 1,
23         TAGS_SET = 2
26 static int append, force, keep, update_head_ok, verbosity;
27 static int tags = TAGS_DEFAULT;
28 static const char *depth;
29 static const char *upload_pack;
30 static struct strbuf default_rla = STRBUF_INIT;
31 static struct transport *transport;
33 static struct option builtin_fetch_options[] = {
34         OPT__VERBOSITY(&verbosity),
35         OPT_BOOLEAN('a', "append", &append,
36                     "append to .git/FETCH_HEAD instead of overwriting"),
37         OPT_STRING(0, "upload-pack", &upload_pack, "PATH",
38                    "path to upload pack on remote end"),
39         OPT_BOOLEAN('f', "force", &force,
40                     "force overwrite of local branch"),
41         OPT_SET_INT('t', "tags", &tags,
42                     "fetch all tags and associated objects", TAGS_SET),
43         OPT_SET_INT('n', NULL, &tags,
44                     "do not fetch all tags (--no-tags)", TAGS_UNSET),
45         OPT_BOOLEAN('k', "keep", &keep, "keep downloaded pack"),
46         OPT_BOOLEAN('u', "update-head-ok", &update_head_ok,
47                     "allow updating of HEAD ref"),
48         OPT_STRING(0, "depth", &depth, "DEPTH",
49                    "deepen history of shallow clone"),
50         OPT_END()
53 static void unlock_pack(void)
55         if (transport)
56                 transport_unlock_pack(transport);
59 static void unlock_pack_on_signal(int signo)
61         unlock_pack();
62         sigchain_pop(signo);
63         raise(signo);
66 static void add_merge_config(struct ref **head,
67                            const struct ref *remote_refs,
68                            struct branch *branch,
69                            struct ref ***tail)
71         int i;
73         for (i = 0; i < branch->merge_nr; i++) {
74                 struct ref *rm, **old_tail = *tail;
75                 struct refspec refspec;
77                 for (rm = *head; rm; rm = rm->next) {
78                         if (branch_merge_matches(branch, i, rm->name)) {
79                                 rm->merge = 1;
80                                 break;
81                         }
82                 }
83                 if (rm)
84                         continue;
86                 /*
87                  * Not fetched to a tracking branch?  We need to fetch
88                  * it anyway to allow this branch's "branch.$name.merge"
89                  * to be honored by 'git pull', but we do not have to
90                  * fail if branch.$name.merge is misconfigured to point
91                  * at a nonexisting branch.  If we were indeed called by
92                  * 'git pull', it will notice the misconfiguration because
93                  * there is no entry in the resulting FETCH_HEAD marked
94                  * for merging.
95                  */
96                 refspec.src = branch->merge[i]->src;
97                 refspec.dst = NULL;
98                 refspec.pattern = 0;
99                 refspec.force = 0;
100                 get_fetch_map(remote_refs, &refspec, tail, 1);
101                 for (rm = *old_tail; rm; rm = rm->next)
102                         rm->merge = 1;
103         }
106 static void find_non_local_tags(struct transport *transport,
107                         struct ref **head,
108                         struct ref ***tail);
110 static struct ref *get_ref_map(struct transport *transport,
111                                struct refspec *refs, int ref_count, int tags,
112                                int *autotags)
114         int i;
115         struct ref *rm;
116         struct ref *ref_map = NULL;
117         struct ref **tail = &ref_map;
119         const struct ref *remote_refs = transport_get_remote_refs(transport);
121         if (ref_count || tags == TAGS_SET) {
122                 for (i = 0; i < ref_count; i++) {
123                         get_fetch_map(remote_refs, &refs[i], &tail, 0);
124                         if (refs[i].dst && refs[i].dst[0])
125                                 *autotags = 1;
126                 }
127                 /* Merge everything on the command line, but not --tags */
128                 for (rm = ref_map; rm; rm = rm->next)
129                         rm->merge = 1;
130                 if (tags == TAGS_SET)
131                         get_fetch_map(remote_refs, tag_refspec, &tail, 0);
132         } else {
133                 /* Use the defaults */
134                 struct remote *remote = transport->remote;
135                 struct branch *branch = branch_get(NULL);
136                 int has_merge = branch_has_merge_config(branch);
137                 if (remote && (remote->fetch_refspec_nr || has_merge)) {
138                         for (i = 0; i < remote->fetch_refspec_nr; i++) {
139                                 get_fetch_map(remote_refs, &remote->fetch[i], &tail, 0);
140                                 if (remote->fetch[i].dst &&
141                                     remote->fetch[i].dst[0])
142                                         *autotags = 1;
143                                 if (!i && !has_merge && ref_map &&
144                                     !remote->fetch[0].pattern)
145                                         ref_map->merge = 1;
146                         }
147                         /*
148                          * if the remote we're fetching from is the same
149                          * as given in branch.<name>.remote, we add the
150                          * ref given in branch.<name>.merge, too.
151                          */
152                         if (has_merge &&
153                             !strcmp(branch->remote_name, remote->name))
154                                 add_merge_config(&ref_map, remote_refs, branch, &tail);
155                 } else {
156                         ref_map = get_remote_ref(remote_refs, "HEAD");
157                         if (!ref_map)
158                                 die("Couldn't find remote ref HEAD");
159                         ref_map->merge = 1;
160                         tail = &ref_map->next;
161                 }
162         }
163         if (tags == TAGS_DEFAULT && *autotags)
164                 find_non_local_tags(transport, &ref_map, &tail);
165         ref_remove_duplicates(ref_map);
167         return ref_map;
170 #define STORE_REF_ERROR_OTHER 1
171 #define STORE_REF_ERROR_DF_CONFLICT 2
173 static int s_update_ref(const char *action,
174                         struct ref *ref,
175                         int check_old)
177         char msg[1024];
178         char *rla = getenv("GIT_REFLOG_ACTION");
179         static struct ref_lock *lock;
181         if (!rla)
182                 rla = default_rla.buf;
183         snprintf(msg, sizeof(msg), "%s: %s", rla, action);
184         lock = lock_any_ref_for_update(ref->name,
185                                        check_old ? ref->old_sha1 : NULL, 0);
186         if (!lock)
187                 return errno == ENOTDIR ? STORE_REF_ERROR_DF_CONFLICT :
188                                           STORE_REF_ERROR_OTHER;
189         if (write_ref_sha1(lock, ref->new_sha1, msg) < 0)
190                 return errno == ENOTDIR ? STORE_REF_ERROR_DF_CONFLICT :
191                                           STORE_REF_ERROR_OTHER;
192         return 0;
195 #define SUMMARY_WIDTH (2 * DEFAULT_ABBREV + 3)
196 #define REFCOL_WIDTH  10
198 static int update_local_ref(struct ref *ref,
199                             const char *remote,
200                             char *display)
202         struct commit *current = NULL, *updated;
203         enum object_type type;
204         struct branch *current_branch = branch_get(NULL);
205         const char *pretty_ref = prettify_refname(ref->name);
207         *display = 0;
208         type = sha1_object_info(ref->new_sha1, NULL);
209         if (type < 0)
210                 die("object %s not found", sha1_to_hex(ref->new_sha1));
212         if (!hashcmp(ref->old_sha1, ref->new_sha1)) {
213                 if (verbosity > 0)
214                         sprintf(display, "= %-*s %-*s -> %s", SUMMARY_WIDTH,
215                                 "[up to date]", REFCOL_WIDTH, remote,
216                                 pretty_ref);
217                 return 0;
218         }
220         if (current_branch &&
221             !strcmp(ref->name, current_branch->name) &&
222             !(update_head_ok || is_bare_repository()) &&
223             !is_null_sha1(ref->old_sha1)) {
224                 /*
225                  * If this is the head, and it's not okay to update
226                  * the head, and the old value of the head isn't empty...
227                  */
228                 sprintf(display, "! %-*s %-*s -> %s  (can't fetch in current branch)",
229                         SUMMARY_WIDTH, "[rejected]", REFCOL_WIDTH, remote,
230                         pretty_ref);
231                 return 1;
232         }
234         if (!is_null_sha1(ref->old_sha1) &&
235             !prefixcmp(ref->name, "refs/tags/")) {
236                 int r;
237                 r = s_update_ref("updating tag", ref, 0);
238                 sprintf(display, "%c %-*s %-*s -> %s%s", r ? '!' : '-',
239                         SUMMARY_WIDTH, "[tag update]", REFCOL_WIDTH, remote,
240                         pretty_ref, r ? "  (unable to update local ref)" : "");
241                 return r;
242         }
244         current = lookup_commit_reference_gently(ref->old_sha1, 1);
245         updated = lookup_commit_reference_gently(ref->new_sha1, 1);
246         if (!current || !updated) {
247                 const char *msg;
248                 const char *what;
249                 int r;
250                 if (!strncmp(ref->name, "refs/tags/", 10)) {
251                         msg = "storing tag";
252                         what = "[new tag]";
253                 }
254                 else {
255                         msg = "storing head";
256                         what = "[new branch]";
257                 }
259                 r = s_update_ref(msg, ref, 0);
260                 sprintf(display, "%c %-*s %-*s -> %s%s", r ? '!' : '*',
261                         SUMMARY_WIDTH, what, REFCOL_WIDTH, remote, pretty_ref,
262                         r ? "  (unable to update local ref)" : "");
263                 return r;
264         }
266         if (in_merge_bases(current, &updated, 1)) {
267                 char quickref[83];
268                 int r;
269                 strcpy(quickref, find_unique_abbrev(current->object.sha1, DEFAULT_ABBREV));
270                 strcat(quickref, "..");
271                 strcat(quickref, find_unique_abbrev(ref->new_sha1, DEFAULT_ABBREV));
272                 r = s_update_ref("fast forward", ref, 1);
273                 sprintf(display, "%c %-*s %-*s -> %s%s", r ? '!' : ' ',
274                         SUMMARY_WIDTH, quickref, REFCOL_WIDTH, remote,
275                         pretty_ref, r ? "  (unable to update local ref)" : "");
276                 return r;
277         } else if (force || ref->force) {
278                 char quickref[84];
279                 int r;
280                 strcpy(quickref, find_unique_abbrev(current->object.sha1, DEFAULT_ABBREV));
281                 strcat(quickref, "...");
282                 strcat(quickref, find_unique_abbrev(ref->new_sha1, DEFAULT_ABBREV));
283                 r = s_update_ref("forced-update", ref, 1);
284                 sprintf(display, "%c %-*s %-*s -> %s  (%s)", r ? '!' : '+',
285                         SUMMARY_WIDTH, quickref, REFCOL_WIDTH, remote,
286                         pretty_ref,
287                         r ? "unable to update local ref" : "forced update");
288                 return r;
289         } else {
290                 sprintf(display, "! %-*s %-*s -> %s  (non fast forward)",
291                         SUMMARY_WIDTH, "[rejected]", REFCOL_WIDTH, remote,
292                         pretty_ref);
293                 return 1;
294         }
297 static int store_updated_refs(const char *raw_url, const char *remote_name,
298                 struct ref *ref_map)
300         FILE *fp;
301         struct commit *commit;
302         int url_len, i, note_len, shown_url = 0, rc = 0;
303         char note[1024];
304         const char *what, *kind;
305         struct ref *rm;
306         char *url, *filename = git_path("FETCH_HEAD");
308         fp = fopen(filename, "a");
309         if (!fp)
310                 return error("cannot open %s: %s\n", filename, strerror(errno));
312         url = transport_anonymize_url(raw_url);
313         for (rm = ref_map; rm; rm = rm->next) {
314                 struct ref *ref = NULL;
316                 if (rm->peer_ref) {
317                         ref = xcalloc(1, sizeof(*ref) + strlen(rm->peer_ref->name) + 1);
318                         strcpy(ref->name, rm->peer_ref->name);
319                         hashcpy(ref->old_sha1, rm->peer_ref->old_sha1);
320                         hashcpy(ref->new_sha1, rm->old_sha1);
321                         ref->force = rm->peer_ref->force;
322                 }
324                 commit = lookup_commit_reference_gently(rm->old_sha1, 1);
325                 if (!commit)
326                         rm->merge = 0;
328                 if (!strcmp(rm->name, "HEAD")) {
329                         kind = "";
330                         what = "";
331                 }
332                 else if (!prefixcmp(rm->name, "refs/heads/")) {
333                         kind = "branch";
334                         what = rm->name + 11;
335                 }
336                 else if (!prefixcmp(rm->name, "refs/tags/")) {
337                         kind = "tag";
338                         what = rm->name + 10;
339                 }
340                 else if (!prefixcmp(rm->name, "refs/remotes/")) {
341                         kind = "remote branch";
342                         what = rm->name + 13;
343                 }
344                 else {
345                         kind = "";
346                         what = rm->name;
347                 }
349                 url_len = strlen(url);
350                 for (i = url_len - 1; url[i] == '/' && 0 <= i; i--)
351                         ;
352                 url_len = i + 1;
353                 if (4 < i && !strncmp(".git", url + i - 3, 4))
354                         url_len = i - 3;
356                 note_len = 0;
357                 if (*what) {
358                         if (*kind)
359                                 note_len += sprintf(note + note_len, "%s ",
360                                                     kind);
361                         note_len += sprintf(note + note_len, "'%s' of ", what);
362                 }
363                 note[note_len] = '\0';
364                 fprintf(fp, "%s\t%s\t%s",
365                         sha1_to_hex(commit ? commit->object.sha1 :
366                                     rm->old_sha1),
367                         rm->merge ? "" : "not-for-merge",
368                         note);
369                 for (i = 0; i < url_len; ++i)
370                         if ('\n' == url[i])
371                                 fputs("\\n", fp);
372                         else
373                                 fputc(url[i], fp);
374                 fputc('\n', fp);
376                 if (ref)
377                         rc |= update_local_ref(ref, what, note);
378                 else
379                         sprintf(note, "* %-*s %-*s -> FETCH_HEAD",
380                                 SUMMARY_WIDTH, *kind ? kind : "branch",
381                                  REFCOL_WIDTH, *what ? what : "HEAD");
382                 if (*note) {
383                         if (verbosity >= 0 && !shown_url) {
384                                 fprintf(stderr, "From %.*s\n",
385                                                 url_len, url);
386                                 shown_url = 1;
387                         }
388                         if (verbosity >= 0)
389                                 fprintf(stderr, " %s\n", note);
390                 }
391         }
392         free(url);
393         fclose(fp);
394         if (rc & STORE_REF_ERROR_DF_CONFLICT)
395                 error("some local refs could not be updated; try running\n"
396                       " 'git remote prune %s' to remove any old, conflicting "
397                       "branches", remote_name);
398         return rc;
402  * We would want to bypass the object transfer altogether if
403  * everything we are going to fetch already exists and is connected
404  * locally.
406  * The refs we are going to fetch are in ref_map.  If running
408  *  $ git rev-list --objects --stdin --not --all
410  * (feeding all the refs in ref_map on its standard input)
411  * does not error out, that means everything reachable from the
412  * refs we are going to fetch exists and is connected to some of
413  * our existing refs.
414  */
415 static int quickfetch(struct ref *ref_map)
417         struct child_process revlist;
418         struct ref *ref;
419         int err;
420         const char *argv[] = {"rev-list",
421                 "--quiet", "--objects", "--stdin", "--not", "--all", NULL};
423         /*
424          * If we are deepening a shallow clone we already have these
425          * objects reachable.  Running rev-list here will return with
426          * a good (0) exit status and we'll bypass the fetch that we
427          * really need to perform.  Claiming failure now will ensure
428          * we perform the network exchange to deepen our history.
429          */
430         if (depth)
431                 return -1;
433         if (!ref_map)
434                 return 0;
436         memset(&revlist, 0, sizeof(revlist));
437         revlist.argv = argv;
438         revlist.git_cmd = 1;
439         revlist.no_stdout = 1;
440         revlist.no_stderr = 1;
441         revlist.in = -1;
443         err = start_command(&revlist);
444         if (err) {
445                 error("could not run rev-list");
446                 return err;
447         }
449         /*
450          * If rev-list --stdin encounters an unknown commit, it terminates,
451          * which will cause SIGPIPE in the write loop below.
452          */
453         sigchain_push(SIGPIPE, SIG_IGN);
455         for (ref = ref_map; ref; ref = ref->next) {
456                 if (write_in_full(revlist.in, sha1_to_hex(ref->old_sha1), 40) < 0 ||
457                     write_in_full(revlist.in, "\n", 1) < 0) {
458                         if (errno != EPIPE && errno != EINVAL)
459                                 error("failed write to rev-list: %s", strerror(errno));
460                         err = -1;
461                         break;
462                 }
463         }
465         if (close(revlist.in)) {
466                 error("failed to close rev-list's stdin: %s", strerror(errno));
467                 err = -1;
468         }
470         sigchain_pop(SIGPIPE);
472         return finish_command(&revlist) || err;
475 static int fetch_refs(struct transport *transport, struct ref *ref_map)
477         int ret = quickfetch(ref_map);
478         if (ret)
479                 ret = transport_fetch_refs(transport, ref_map);
480         if (!ret)
481                 ret |= store_updated_refs(transport->url,
482                                 transport->remote->name,
483                                 ref_map);
484         transport_unlock_pack(transport);
485         return ret;
488 static int add_existing(const char *refname, const unsigned char *sha1,
489                         int flag, void *cbdata)
491         struct string_list *list = (struct string_list *)cbdata;
492         string_list_insert(refname, list);
493         return 0;
496 static int will_fetch(struct ref **head, const unsigned char *sha1)
498         struct ref *rm = *head;
499         while (rm) {
500                 if (!hashcmp(rm->old_sha1, sha1))
501                         return 1;
502                 rm = rm->next;
503         }
504         return 0;
507 static void find_non_local_tags(struct transport *transport,
508                         struct ref **head,
509                         struct ref ***tail)
511         struct string_list existing_refs = { NULL, 0, 0, 0 };
512         struct string_list new_refs = { NULL, 0, 0, 1 };
513         char *ref_name;
514         int ref_name_len;
515         const unsigned char *ref_sha1;
516         const struct ref *tag_ref;
517         struct ref *rm = NULL;
518         const struct ref *ref;
520         for_each_ref(add_existing, &existing_refs);
521         for (ref = transport_get_remote_refs(transport); ref; ref = ref->next) {
522                 if (prefixcmp(ref->name, "refs/tags"))
523                         continue;
525                 ref_name = xstrdup(ref->name);
526                 ref_name_len = strlen(ref_name);
527                 ref_sha1 = ref->old_sha1;
529                 if (!strcmp(ref_name + ref_name_len - 3, "^{}")) {
530                         ref_name[ref_name_len - 3] = 0;
531                         tag_ref = transport_get_remote_refs(transport);
532                         while (tag_ref) {
533                                 if (!strcmp(tag_ref->name, ref_name)) {
534                                         ref_sha1 = tag_ref->old_sha1;
535                                         break;
536                                 }
537                                 tag_ref = tag_ref->next;
538                         }
539                 }
541                 if (!string_list_has_string(&existing_refs, ref_name) &&
542                     !string_list_has_string(&new_refs, ref_name) &&
543                     (has_sha1_file(ref->old_sha1) ||
544                      will_fetch(head, ref->old_sha1))) {
545                         string_list_insert(ref_name, &new_refs);
547                         rm = alloc_ref(ref_name);
548                         rm->peer_ref = alloc_ref(ref_name);
549                         hashcpy(rm->old_sha1, ref_sha1);
551                         **tail = rm;
552                         *tail = &rm->next;
553                 }
554                 free(ref_name);
555         }
556         string_list_clear(&existing_refs, 0);
557         string_list_clear(&new_refs, 0);
560 static void check_not_current_branch(struct ref *ref_map)
562         struct branch *current_branch = branch_get(NULL);
564         if (is_bare_repository() || !current_branch)
565                 return;
567         for (; ref_map; ref_map = ref_map->next)
568                 if (ref_map->peer_ref && !strcmp(current_branch->refname,
569                                         ref_map->peer_ref->name))
570                         die("Refusing to fetch into current branch %s "
571                             "of non-bare repository", current_branch->refname);
574 static int do_fetch(struct transport *transport,
575                     struct refspec *refs, int ref_count)
577         struct ref *ref_map;
578         struct ref *rm;
579         int autotags = (transport->remote->fetch_tags == 1);
580         if (transport->remote->fetch_tags == 2 && tags != TAGS_UNSET)
581                 tags = TAGS_SET;
582         if (transport->remote->fetch_tags == -1)
583                 tags = TAGS_UNSET;
585         if (!transport->get_refs_list || !transport->fetch)
586                 die("Don't know how to fetch from %s", transport->url);
588         /* if not appending, truncate FETCH_HEAD */
589         if (!append) {
590                 char *filename = git_path("FETCH_HEAD");
591                 FILE *fp = fopen(filename, "w");
592                 if (!fp)
593                         return error("cannot open %s: %s\n", filename, strerror(errno));
594                 fclose(fp);
595         }
597         ref_map = get_ref_map(transport, refs, ref_count, tags, &autotags);
598         if (!update_head_ok)
599                 check_not_current_branch(ref_map);
601         for (rm = ref_map; rm; rm = rm->next) {
602                 if (rm->peer_ref)
603                         read_ref(rm->peer_ref->name, rm->peer_ref->old_sha1);
604         }
606         if (tags == TAGS_DEFAULT && autotags)
607                 transport_set_option(transport, TRANS_OPT_FOLLOWTAGS, "1");
608         if (fetch_refs(transport, ref_map)) {
609                 free_refs(ref_map);
610                 return 1;
611         }
612         free_refs(ref_map);
614         /* if neither --no-tags nor --tags was specified, do automated tag
615          * following ... */
616         if (tags == TAGS_DEFAULT && autotags) {
617                 struct ref **tail = &ref_map;
618                 ref_map = NULL;
619                 find_non_local_tags(transport, &ref_map, &tail);
620                 if (ref_map) {
621                         transport_set_option(transport, TRANS_OPT_FOLLOWTAGS, NULL);
622                         transport_set_option(transport, TRANS_OPT_DEPTH, "0");
623                         fetch_refs(transport, ref_map);
624                 }
625                 free_refs(ref_map);
626         }
628         return 0;
631 static void set_option(const char *name, const char *value)
633         int r = transport_set_option(transport, name, value);
634         if (r < 0)
635                 die("Option \"%s\" value \"%s\" is not valid for %s",
636                         name, value, transport->url);
637         if (r > 0)
638                 warning("Option \"%s\" is ignored for %s\n",
639                         name, transport->url);
642 int cmd_fetch(int argc, const char **argv, const char *prefix)
644         struct remote *remote;
645         int i;
646         static const char **refs = NULL;
647         int ref_nr = 0;
648         int exit_code;
650         /* Record the command line for the reflog */
651         strbuf_addstr(&default_rla, "fetch");
652         for (i = 1; i < argc; i++)
653                 strbuf_addf(&default_rla, " %s", argv[i]);
655         argc = parse_options(argc, argv, prefix,
656                              builtin_fetch_options, builtin_fetch_usage, 0);
658         if (argc == 0)
659                 remote = remote_get(NULL);
660         else
661                 remote = remote_get(argv[0]);
663         if (!remote)
664                 die("Where do you want to fetch from today?");
666         transport = transport_get(remote, remote->url[0]);
667         if (verbosity >= 2)
668                 transport->verbose = 1;
669         if (verbosity < 0)
670                 transport->verbose = -1;
671         if (upload_pack)
672                 set_option(TRANS_OPT_UPLOADPACK, upload_pack);
673         if (keep)
674                 set_option(TRANS_OPT_KEEP, "yes");
675         if (depth)
676                 set_option(TRANS_OPT_DEPTH, depth);
678         if (argc > 1) {
679                 int j = 0;
680                 refs = xcalloc(argc + 1, sizeof(const char *));
681                 for (i = 1; i < argc; i++) {
682                         if (!strcmp(argv[i], "tag")) {
683                                 char *ref;
684                                 i++;
685                                 if (i >= argc)
686                                         die("You need to specify a tag name.");
687                                 ref = xmalloc(strlen(argv[i]) * 2 + 22);
688                                 strcpy(ref, "refs/tags/");
689                                 strcat(ref, argv[i]);
690                                 strcat(ref, ":refs/tags/");
691                                 strcat(ref, argv[i]);
692                                 refs[j++] = ref;
693                         } else
694                                 refs[j++] = argv[i];
695                 }
696                 refs[j] = NULL;
697                 ref_nr = j;
698         }
700         sigchain_push_common(unlock_pack_on_signal);
701         atexit(unlock_pack);
702         exit_code = do_fetch(transport,
703                         parse_fetch_refspec(ref_nr, refs), ref_nr);
704         transport_disconnect(transport);
705         transport = NULL;
706         return exit_code;