Modify a commit which has been pushed

Find the ID (denoted by pre-cmt-id) of the previous commit of the commit that you need to modify.

Run git rebase -i pre-cmt-id.

Modify pick to edit in the line where the commit to be modified is located. Then save and exit.

Make changes.

Run git add ….

Run git commit --amend.

Run git push … if you want to push changes to remote.

Run git rebase --continue.