6 git-checkout - Checkout and switch to a branch
11 'git-checkout' [-f] [-b <new_branch>] [-m] [<branch>]
12 'git-checkout' [-m] [<branch>] <paths>...
17 When <paths> are not given, this command switches branches by
18 updating the index and working tree to reflect the specified
19 branch, <branch>, and updating HEAD to be <branch> or, if
20 specified, <new_branch>. Using -b will cause <new_branch> to
23 When <paths> are given, this command does *not* switch
24 branches. It updates the named paths in the working tree from
25 the index file (i.e. it runs `git-checkout-index -f -u`). In
26 this case, `-f` and `-b` options are meaningless and giving
27 either of them results in an error. <branch> argument can be
28 used to specify a specific tree-ish to update the index for the
29 given paths before updating the working tree.
35 Force a re-read of everything.
38 Create a new branch and start it at <branch>.
41 If you have local modifications to one or more files that
42 are different between the current branch and the branch to
43 which you are switching, the command refuses to switch
44 branches in order to preserve your modifications in context.
45 However, with this option, a three-way merge between the current
46 branch, your working tree contents, and the new branch
47 is done, and you will be on the new branch.
49 When a merge conflict happens, the index entries for conflicting
50 paths are left unmerged, and you need to resolve the conflicts
51 and mark the resolved paths with `git update-index`.
54 Name for the new branch.
57 Branch to checkout; may be any object ID that resolves to a
58 commit. Defaults to HEAD.
64 . The following sequence checks out the `master` branch, reverts
65 the `Makefile` to two revisions back, deletes hello.c by
66 mistake, and gets it back from the index.
69 $ git checkout master <1>
70 $ git checkout master~2 Makefile <2>
72 $ git checkout hello.c <3>
75 <2> take out a file out of other commit
76 <3> or "git checkout -- hello.c", as in the next example.
79 If you have an unfortunate branch that is named `hello.c`, the
80 last step above would be confused as an instruction to switch to
81 that branch. You should instead write:
84 $ git checkout -- hello.c
87 . After working in a wrong branch, switching to the correct
88 branch would be done using:
91 $ git checkout mytopic
94 However, your "wrong" branch and correct "mytopic" branch may
95 differ in files that you have locally modified, in which case,
96 the above checkout would fail like this:
99 $ git checkout mytopic
100 fatal: Entry 'frotz' not uptodate. Cannot merge.
103 You can give the `-m` flag to the command, which would try a
107 $ git checkout -m mytopic
111 After this three-way merge, the local modifications are _not_
112 registered in your index file, so `git diff` would show you what
113 changes you made since the tip of the new branch.
115 . When a merge conflict happens during switching branches with
116 the `-m` option, you would see something like this:
119 $ git checkout -m mytopic
121 merge: warning: conflicts during merge
122 ERROR: Merge conflict in frotz
123 fatal: merge program failed
126 At this point, `git diff` shows the changes cleanly merged as in
127 the previous example, as well as the changes in the conflicted
128 files. Edit and resolve the conflict and mark it resolved with
129 `git update-index` as usual:
133 $ git update-index frotz
139 Written by Linus Torvalds <torvalds@osdl.org>
143 Documentation by Junio C Hamano and the git-list <git@vger.kernel.org>.
147 Part of the gitlink:git[7] suite