How to create a homemade .mailmap file copy one from someone whose work you trust so you know the format command curl --location --remote-name \ 'https://web.archive.org/web/0id_/github.com/wincent/wincent/raw/f2598a0cdc/.mailmap' list all names and email addresses in your repository’s commit history command git log --pretty='%an <%ae>%n%cn <%ce>' | LC_ALL='C' command sort -u then keep editing .mailmap until satisfied with the output of the following command command git shortlog --summary --numbered --email --all | command cut -f 2 | LC_ALL='C' command sort -u