How to remove commits from a pull request

Question

People wouldn’t like to see a wrong commit and a revert commit to undo changes of the wrong commit. This pollutes commit history.

Here is a simple way for removing the wrong commit instead of undoing changes with a revert commit.

git checkout my-pull-request-branch
git rebase -i HEAD~n // where n is the number of last commits you want to include in interactive
rebase.
Replace pick with drop for commits you want to discard.
Save and exit.
git push --force