Re: fatal: ambiguous argument 'HEAD^': unknown revision or path not in the working tree.

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On Wed, Sep 09, 2015 at 01:34:03AM -0700, davilda_ wrote:

> i'm new with git and i just want to cancel a commit. I just do git add and
> git commit.
> How can i canceled a commit in my case.

Usually with "git reset HEAD^". But I'm guessing from your subject line
that you tried that, and it did not work because this commit is the
_only_ commit in your repository (and "HEAD^", which means "the parent
commit of HEAD", does not make any sense, as there is no parent).

Annoyingly, I don't think there is an easy way with the current tools to
handle this corner case (you want to not reset to a commit, but back to
the "unborn branch" state).

The "simplest" way to do that is:

  rm .git/refs/heads/master

but that is not guaranteed to work in future versions of git, and I
wouldn't recommend it in general.

Probably a better workflow is to create the commit state you _do_ want
(change files, "git add" them, etc), and then run "git commit --amend"
to replace the bad commit.

-Peff
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