I'm confused why there's no attribution or reference to Tobi's (which in turn referenced the cursor git post)

Attribution is not just a problem for LLMs in mathematics!

Tobi is where I first heard the concept: https://github.com/tobi/walgit

And he credits this Cursor post for giving him the ideas and says it's worth reading: https://cursor.com/blog/git-at-any-scale

Note: in related work, the East River Source Control team has posted about their vision for git as well: https://ersc.io/blog/what-comes-after-git