This sort of use case makes sense to make a copy of the .git folder. When you are trying to rewrite the history of a whole Git repo, throwing away the repo and

This sort of use case makes sense to make a copy of the .git folder. When you are trying to rewrite the history of a whole Git repo, throwing away the repo and starting for a backup is often easier than trying to unwind changes. Though in this specific case of rewriting emails, there is a way in git to do it without rewriting history: https://git-scm.com/docs/gitmailmap https://git-scm.com/docs/gitmailmap