# checkout without touching HEAD 3 messages from 2007-12-27 to 2007-12-27. Participants: Martin Langhoff, Junio C Hamano. Thread: https://gitlist.dev/t/11409 ## Martin Langhoff, 2007-12-27 22:22 Subject: checkout without touching HEAD Message-ID: <46a038f90712271422o7a831c09s463735ec41356b59@mail.gmail.com> URL: https://gitlist.dev/e/46a038f90712271422o7a831c09s463735ec41356b59%40mail.gmail.com ``` Is there a way to get a 'checkout' of a treeish _directly_ from git to an empty (or 'no conflicting paths'-guaranteed) directory, without touching HEAD? Using `git-archive ... | tar -x` is a waste of time and resources -- I do want this to be fast for large datasets. I have hacked it a bit by backing up HEAD, using git checkout with a temporary index, and then restoring HEAD, which I can do because my script has a big fat lock around it. But it's very un-gittish to need a big lock around me. Maybe there's a command I'm missing? Or a zikrit option to checkout I haven't found? cheers, m ``` ## Junio C Hamano, 2007-12-27 22:38 Subject: Re: checkout without touching HEAD Message-ID: <7vsl1nix0x.fsf@gitster.siamese.dyndns.org> URL: https://gitlist.dev/e/7vsl1nix0x.fsf%40gitster.siamese.dyndns.org In-Reply-To: <46a038f90712271422o7a831c09s463735ec41356b59@mail.gmail.com> ``` "Martin Langhoff" writes: > Is there a way to get a 'checkout' of a treeish _directly_ from git to > an empty (or 'no conflicting paths'-guaranteed) directory, without > touching HEAD? > > Using `git-archive ... | tar -x` is a waste of time and resources -- I > do want this to be fast for large datasets. I have hacked it a bit by > backing up HEAD, using git checkout with a temporary index, and then > restoring HEAD, which I can do because my script has a big fat lock > around it. But it's very un-gittish to need a big lock around me. git read-tree -m -u HEAD $treeish ``` ## Martin Langhoff, 2007-12-27 22:48 Subject: Re: checkout without touching HEAD Message-ID: <46a038f90712271448p7f069f06pcd52bf90941b71eb@mail.gmail.com> URL: https://gitlist.dev/e/46a038f90712271448p7f069f06pcd52bf90941b71eb%40mail.gmail.com In-Reply-To: <7vsl1nix0x.fsf@gitster.siamese.dyndns.org> ``` On Dec 28, 2007 11:38 AM, Junio C Hamano wrote: > git read-tree -m -u HEAD $treeish Thanks! Trying it now... (I'm combining git with PostgreSQL's PITR snapshot+xlog technique for an automated, reasonable-disk-footprint "rewind my webapp to any arbitrary point in time in the last X days" facility, mainly for edit-heavy web apps like Moodle. So far, it's looking good ;-) -- could be a killer feature for the LAPP platform... ) m ```