Within my master branch, I did a git merge some-other-branch locally, but never pushed the changes to origin master. I didn't mean to merge, so I'd like to undo it. When doing a git status after my merge, I was getting this message:

# On branch master
# Your branch is ahead of 'origin/master' by 4 commits.

Based upon some instructions I found, I tried running

git revert HEAD -m 1

but now I'm getting this message with git status:

# On branch master
# Your branch is ahead of 'origin/master' by 5 commits.

I don't want my branch to be ahead by any number of commits. How do I get back to that point?