$ echo hello > foo.txt
$ git add . && git commit -m 'Commit for fun' && git push
$ git reset HEAD~1 --hard
$ git status

On branch master 
Your branch is behind 'origin/master' by 1 commit, and can be fast-forwarded.
     (use "git pull" to update your local branch)

nothing to commit, working tree clean

$ git push --force
$ git status

On branch master
Your branch is up to date with 'origin/master'.                                                                                                                                                                                                                                                             

nothing to commit, working tree clean