git worktree add [-f] [--detach] [--checkout] [--lock] [-b <new-branch>] <path> [<commit-ish>] git worktree list [--porcelain] git worktree lock [--reason <string>] <worktree> git worktree move <worktree> <new-path> git worktree prune [-n] [-v] [--expire <expire>] git worktree remove [-f] <worktree> git worktree unlock <worktree>
A git repository can support multiple working trees, allowing you to check out more than one branch at a time. With git worktree add a new working tree is associated with the repository. This new working tree is called a "linked working tree" as opposed to the "main working tree" prepared by "git init" or "git clone". A repository has one main working tree (if it’s not a bare repository) and zero or more linked working trees. When you are done with a linked working tree, remove it with git worktree remove.
If a working tree is deleted without using git worktree remove, then its associated administrative files, which reside in the repository (see "DETAILS" below), will eventually be removed automatically (see gc.worktreePruneExpire in git-config(1)), or you can run git worktree prune in the main or any linked working tree to clean up any stale administrative files.
If a linked working tree is stored on a portable device or network share which is not always mounted, you can prevent its administrative files from being pruned by issuing the git worktree lock command, optionally specifying --reason to explain why the working tree is locked.
If <commit-ish> is a branch name (call it <branch>) and is not found, and neither -b nor -B nor --detach are used, but there does exist a tracking branch in exactly one remote (call it <remote>) with a matching name, treat as equivalent to:
$ git worktree add --track -b <branch> <path> <remote>/<branch>
If the branch exists in multiple remotes and one of them is named by the checkout.defaultRemote configuration variable, we’ll use that one for the purposes of disambiguation, even if the <branch> isn’t unique across all remotes. Set it to e.g. checkout.defaultRemote=origin to always checkout remote branches from there if <branch> is ambiguous but exists on the origin remote. See also checkout.defaultRemote in git-config(1).
If <commit-ish> is omitted and neither -b nor -B nor --detach used, then, as a convenience, the new worktree is associated with a branch (call it <branch>) named after $(basename <path>). If <branch> doesn’t exist, a new branch based on HEAD is automatically created as if -b <branch> was given. If <branch> does exist, it will be checked out in the new worktree, if it’s not checked out anywhere else, otherwise the command will refuse to create the worktree (unless --force is used).
move refuses to move a locked working tree unless --force is specified twice.
remove refuses to remove an unclean working tree unless --force is used. To remove a locked working tree, specify --force twice.
-b <new-branch>, -B <new-branch>
This can also be set up as the default behaviour by using the worktree.guessRemote config option.
If the last path components in the working tree’s path is unique among working trees, it can be used to identify worktrees. For example if you only have two working trees, at "/abc/def/ghi" and "/abc/def/ggg", then "ghi" or "def/ghi" is enough to point to the former working tree.
In general, all pseudo refs are per working tree and all refs starting with "refs/" are shared. Pseudo refs are ones like HEAD which are directly under GIT_DIR instead of inside GIT_DIR/refs. There is one exception to this: refs inside refs/bisect and refs/worktree is not shared.
Refs that are per working tree can still be accessed from another working tree via two special paths, main-worktree and worktrees. The former gives access to per-worktree refs of the main working tree, while the latter to all linked working trees.
For example, main-worktree/HEAD or main-worktree/refs/bisect/good resolve to the same value as the main working tree’s HEAD and refs/bisect/good respectively. Similarly, worktrees/foo/HEAD or worktrees/bar/refs/bisect/bad are the same as GIT_COMMON_DIR/worktrees/foo/HEAD and GIT_COMMON_DIR/worktrees/bar/refs/bisect/bad.
In order to have configuration specific to working trees, you can turn on "worktreeConfig" extension, e.g.:
$ git config extensions.worktreeConfig true
In this mode, specific configuration stays in the path pointed by git rev-parse --git-path config.worktree. You can add or update configuration in this file with git config --worktree. Older Git versions will refuse to access repositories with this extension.
Note that in this file, the exception for core.bare and core.worktree is gone. If you have them in $GIT_DIR/config before, you must move them to the config.worktree of the main working tree. You may also take this opportunity to review and move other configuration that you do not want to share to all working trees:
Within a linked working tree, $GIT_DIR is set to point to this private directory (e.g. /path/main/.git/worktrees/test-next in the example) and $GIT_COMMON_DIR is set to point back to the main working tree’s $GIT_DIR (e.g. /path/main/.git). These settings are made in a .git file located at the top directory of the linked working tree.
Path resolution via git rev-parse --git-path uses either $GIT_DIR or $GIT_COMMON_DIR depending on the path. For example, in the linked working tree git rev-parse --git-path HEAD returns /path/main/.git/worktrees/test-next/HEAD (not /path/other/test-next/.git/HEAD or /path/main/.git/HEAD) while git rev-parse --git-path refs/heads/master uses $GIT_COMMON_DIR and returns /path/main/.git/refs/heads/master, since refs are shared across all working trees, except refs/bisect and refs/worktree.
See gitrepository-layout(5) for more information. The rule of thumb is do not make any assumption about whether a path belongs to $GIT_DIR or $GIT_COMMON_DIR when you need to directly access something inside $GIT_DIR. Use git rev-parse --git-path to get the final path.
If you manually move a linked working tree, you need to update the gitdir file in the entry’s directory. For example, if a linked working tree is moved to /newpath/test-next and its .git file points to /path/main/.git/worktrees/test-next, then update /path/main/.git/worktrees/test-next/gitdir to reference /newpath/test-next instead.
To prevent a $GIT_DIR/worktrees entry from being pruned (which can be useful in some situations, such as when the entry’s working tree is stored on a portable device), use the git worktree lock command, which adds a file named locked to the entry’s directory. The file contains the reason in plain text. For example, if a linked working tree’s .git file points to /path/main/.git/worktrees/test-next then a file named /path/main/.git/worktrees/test-next/locked will prevent the test-next entry from being pruned. See gitrepository-layout(5) for details.
When extensions.worktreeConfig is enabled, the config file .git/worktrees/<id>/config.worktree is read after .git/config is.
$ git worktree list /path/to/bare-source (bare) /path/to/linked-worktree abcd1234 [master] /path/to/other-linked-worktree 1234abc (detached HEAD)
$ git worktree list --porcelain worktree /path/to/bare-source bare worktree /path/to/linked-worktree HEAD abcd1234abcd1234abcd1234abcd1234abcd1234 branch refs/heads/master worktree /path/to/other-linked-worktree HEAD 1234abc1234abc1234abc1234abc1234abc1234a detached
$ git worktree add -b emergency-fix ../temp master $ pushd ../temp # ... hack hack hack ... $ git commit -a -m 'emergency fix for boss' $ popd $ git worktree remove ../temp