This NIP is not yet in main. Here is an overview of PRs referencing this NIP. 
nips over nostr OPEN @Semisol
NIP-17 - Event Metadata OPEN @arthurfranca
NIP-17 Code Collaboration OPEN @DanConwayDev
NIP-17: Tracking Git Commits with Nostr OPEN @melvincarvalho
NIP-17 Git Updates and Discovery Over Nostr - first draft CLOSED @melvincarvalho