Option C links to a repository that doesnt exist. ngit has the git-remote-nostr plugin that enables cloning via `nostr://` see ngit.dev/install
Jo, I include https://git.gittr.space/... as the primary clone tag on push by a new endpoint to the bridge so theres a guaranteed HTTPS source while it’s processing. Once other relays pick up the NIP‑34 event, the nostr:// URLs are broadcasted and should work. http://gittr.space/help#git-operations

Discussion
Those are placeholders in the docs;. As said the real repo cards include the live nostr://npub… links, and they’re meant to be consumed via git-remote-nostr. https://gittr.space/npub1n2ph08n4pqz4d3jk6n2p35p2f4ldhc5g5tu7dhftfpueajf4rpxqfjhzmc/gittr?path=docs&file=docs%2FSSH_GIT_GUIDE.md