Might not be as old as some others as I have throughly modernized this January but https://github.com/ddev/git-blameall https://github.com/ddev/git-blameall is

Might not be as old as some others as I have throughly modernized this January but https://github.com/ddev/git-blameall https://github.com/ddev/git-blameall is very useful: this is a tool similar to git-blame, but it shows every line that was ever in the file, along with information about when it was added or deleted.