Re: can git reset or checkout be reverted?

From: Sitaram Chamarty <sitaramc@gmail.com>
Date: Feb 6, 2009, 16:03 UTC
Message-ID: <slrngoonqk.urh.sitaramc@sitaramc.homelinux.net>
In-Reply-To: <20090206141940.GB7231@b2j>

On 2009-02-06, bill lam <cbill.lam@gmail.com> wrote:

Show 9 quoted lines

> If I want to recall a old version of testing by
>
> git reset --hard sha1
> or
> git checkout sha1
>
> then git log does not show anything beyond that commit. It does give
> some warning and recommend -b switch next time.  If I only do that by
> accident or ignorance.  How to revert to the original HEAD?

As others have said: reflog.

I just wanted to add, I've had a lot of luck using reflog's @{now} feature:

    git reflog show @{now}

Coupled with a vague recollection of what action I did at what time, this has saved me a few times, and if I've been jumping around branches as well, then:

    git reflog show HEAD@{now}

Another good one is:

    git show-branch --sha1-name -g=5

(or some larger value depending on how big your xterm is.) This is particularly useful when I've done a lot of 'git commit --amend' or rebases; the top most '+' sign in each column, starting from the left, is your reflog -- I don't know who came up with this design but it's amazing how much useful information is condensed into that display.