If you want to move the HEAD to the parent of the current HEAD, that\'s easy:
git reset --hard HEAD^
But is there
Based on the answer given in How do I find the next commit in git?, I have another solution that works for me.
Assuming that you want to find the next revision on the "master" branch, then you can do:
git log --reverse ${commit}..master | sed 's/commit //; q'
This also assumes that there is one next revision, but that is kind of assumed by the question anyway.