In a different conversation (https://sigmodrecord.org/publications/sigmodRecord/1906/pdfs...) Hipp said he’d like to create a combination of Fossil and Git:

Q: If you magically had enough extra time to do one additional thing at work that you’re not doing now, what would it be?

A: Oh, I’ve got a long list. But my #1 thing right now I think would be a new version control system which the working name is Fit, it’s a combination of Fossil with Git. Uses the Fossil user interface but it uses the low-level file format of Git. So that then you can work with Fossil’s interface but push and pull to legacy Git users. And I think that would be huge.