Use this when you need to change the author of all the commit messages in a branch.
git filter-branch -f --env-filter "GIT_AUTHOR_NAME='n8e'; GIT_AUTHOR_EMAIL='[email protected]'; GIT_COMMITTER_NAME='n8e'; GIT_COMMITTER_EMAIL='[email protected]';" HEAD
After this, then git push origin + to force push the changes to the repository