I proposed a Github replacement also, but it was rejected as an idea because it replaced Git. 🤷♂️
Discussion
where can I check this out? I'd like to understand that project more
It’s barely a project. The suggestion already works using nostr at it exists today.
See here…
nostr:note1fpc3udsqc9myf70zcalmqy3kqn4ycjcm7sqzknlv7d74ljwljkpqq9lswc
nostr:note13udr3a8v786xa0fazneuk9hhqga6fs7jh5zt2284lc5aqvl7htlsvjaun4
Simple. 
Oh yeah, I agree with whoever told you you’re recreating git, which is already decentralized-first, instead of GitHub.
What needs replacing is the stuff GitHub offers on top of git
Where do you store your code repos?
Many places, but storage != revision mgmt system 😅
If it were a matter of wanting to leverage nostr relays for storage and data distribution you would probably be better off just saving git blobs on relays and leveraging git enormous, decentralized-first, architecture.
(To be clear, I don’t think that should be done)