I did a git commit but I have not pushed it to the repository yet. So when I do git status, I get '# Your branch is ahead of 'master' by 1 commit.

So if I want to roll back my top commit, can I just do:

git reset --hard eb27bf26dd18c5a34e0e82b929e0d74cfcaab316

given that when I do git log I get:

commit eb27bf26dd18c5a34e0e82b929e0d74cfcaab316
Date:   Tue Sep 29 11:21:41 2009 -0700
commit db0c078d5286b837532ff5e276dcf91885df2296
Date:   Tue Sep 22 10:31:37 2009 -0700

IF you have NOT pushed your changes to remote

git reset HEAD~1

Check if the working copy is clean by git status.

ELSE you have pushed your changes to remote

git revert HEAD

This command will revert/remove the local commits/change and then you can push