Revert the use of filter-branch in Git

Question

I used git filter-branch and screwed something up and accidentally rewrote sections of the history I didn't want to. I was trying to change one name and accidentally changed every single commit (instead of only ones with a specific name).

I know that 'git filter-branch' keeps a backup at refs/original, but I don't know how to revert the master branch to this old version. What's the git command to do this?

Answer 1

If you know the commit id you're trying to revert to, you can use

$ git checkout master
$ git reset --hard <commit id>