How to change the commit author for past commits

1. Interactive rebase git rebase -ip [commit hash]

2. In the rebase view, change pick to edit (or e) for the commits you want to change.

3. Back on the command line when each commit is loaded during the rebase, amend the commit with: git commit -v --amend --author="Jamis Charles <myemail@example.com>" --no-edit

4. Move to the next commit (until complete) git rebase --continue

5. Done! If your remote branch has the wrong commit author you'll need to force push your changes (careful with that).