git change author

git status
git stash
lastKnownGood=f936f63aa0b371656a010021306c7c02f7f1d68a
git rebase -i -p $lastKnownGood
# repeat {
git commit --amend --author=flederwiesel
# OR:
git commit --amend --reset-author
git rebase --continue
# } until (finished)