We have AI now. AI tools are pretty handy with Git. I've not manually resolved git conflicts in months now. That's more or less a solved problem for me. Mostly codex creates and manages pull requests for me. I also have it manage my GitHub issues on some projects. For some things, I also let it do release management with elaborate checklists, release prep, and driving automation for package deployment via github actions triggered via tags, and then creating the gh release and attaching binaries. In short, I just give a thumbs up and all the right things happen.
To be blunt, I think a SAAS service that tries to make Git nicer to use is a going to be a bit redundant. I don't think AI tools really need that help. Or a git replacement. And people will mostly be delegating whatever it is they still do manually with Git pretty soon. I've made that switch already because I'm an early adopter. And because I'm lazy and it seems AI is more disciplined at following good practices and process than I am.