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

> I was using GitX to prepare a commit. Something happened -- I don't 
> know what --  and suddenly my branch only had a single commit 
> in it that appears to contain all  the files in my tree. So I went to the 
> command line and did this:
> 
> $ git reset --soft HEAD^ 
> fatal: ambiguous argument 'HEAD^': unknown revision or path not 
> in the working tree.
> 
> When I do 'git log' in this branch, there's only one commit. Now, I 
> had many commits in this branch a few minutes ago. I really, 
> really, don't want to lose this.
> 
> What steps should I take to attempt to recover?