Say I have a git repository clone at:

/myrepos/foo

so there is a .git directory here:

/myrepos/foo/.git

and say I want to create a new directory at:

/tmp/bar

with a copy of the tree as at revision 123

Such that:

• the /myrepos/foo directory (nor its .git directory) is not modified
• no /tmp/bar/.git folder

Is there a command to do that?

Something like:

/myrepos/foo$ git checkout --into-new-directory /tmp/bar 123

perhaps?

CodePudding user response：

There are multiple ways to do that.

The most straightforward, available since Git 2.5 (but with some important fixes in later versions if you intend to do any work with these), is to use git worktree add. This will add a new working tree; you choose where it goes.

The resulting working tree does, however, have a .git file. You may simply remove this file (rm /tmp/foo/.git); to inform your local Git that this working tree is now gone, run git worktree prune right afterwards. The actual checkout will remain in place. For instance:

$ git worktree add --detach /tmp/git HEAD~3
[output trimmed]
$ rm /tmp/git/.git
$ git worktree prune

If your Git predates 2.5, or for some reason you don't want to use git worktree, you can:

• create the directory (mkdir /tmp/foo)
• run (export GIT_INDEX=$(mktemp -u) && git checkout --work-tree=/tmp/foo <hash> && rm $GIT_INDEX)

in any POSIX-compatible shell. (Note: untested, unlike the git worktree add example.)

CodePudding user response：

Git can manage multiple working trees. Run this:

git worktree add /tmp/foo 123

The new folder will have a small .git folder but you should be able to remove it. Run git worktree help for a little more info and git help worktree for a lot more info.

CodePudding user response：

Git can create an archive file of a specific commit and then you can extract that archive file wherever you would like.

git archive --prefix foo/ -o /tmp/foo.tar 123
cd /tmp
tar -xvf foo.tar

This shouldn't affect the main repository at all.