There was GitTorrent in 2015:

https://blog.printf.net/articles/2015/05/29/announcing-gitto... https://news.ycombinator.com/item?id=31534936

There are also multiple git-remote-ipfs projects on GitHub.

In some sense, this has the same problem as TFA: who is going to seed those disused repos (same problem with ipfs linked in the sibling comment, which one can pay a "pinning node" but pay)