[git] How to change the author and committer name and e-mail of multiple commits in Git?

A safer alternative to git's filter-branch is filter-repo tool as suggested by git docs here.

git filter-repo --commit-callback '

  old_email = b"[email protected]"
  correct_name = b"Your Correct Name"
  correct_email = b"[email protected]"

  if commit.committer_email == old_email :
    commit.committer_name = correct_name
    commit.committer_email = correct_email

  if commit.author_email == old_email : 
    commit.author_name = correct_name
    commit.author_email = correct_email
  '

The above command mirrors the logic used in this script but uses filter-repo instead of filter-branch.

The code body after commit-callback option is basically python code used for processing commits. You can write your own logic in python here. See more about commit object and its attributes here.

Since filter-repo tool is not bundled with git you need to install it separately.

See Prerequisties and Installation Guide

If you have a python env >= 3.5, you can use pip to install it.

pip3 install git-filter-repo

Note: It is strongly recommended to try filter-repo tool on a fresh clone. Also remotes are removed once the operation is done. Read more on why remotes are removed here. Also read the limitations of this tool under INTERNALS section.

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