so I followed the instruction to remove my last 4 commits at : How to revert Git repository to a previous commit?
After I do git reset --hard 0d1d7fc32
my git log does not show the last 4 commits but when I try to commit, it doesnt update my github
it says : $ git commit . On branch master Your branch is behind 'origin/master' by 4 commits, and can be fast-forwarded. (use "git pull" to update your local branch)
nothing to commit, working directory clean
how do i update my github so my last 4 commits are gone?