Hi! I started this project in 2015, using Bitcoin and BitTorrent -- since then, I think Ethereum and IPFS have become better substrates for this sort of work.

And, I think it remains the case that the difficult part of decentralizing GitHub is not working out how to share repositories using p2p bandwidth, but instead working out how to use p2p for the social features of the site, like comments and pull requests.

Secure Scuttlebutt has some potential there, but as a gossip protocol it doesn't have a way for people you don't know/follow to e.g. send you a PR.

Looks like it's abandoned, but it's a start at using ETH and IPFS.