Returns the upstream repository pointer (the repo this one was forked from), if declared. Parsed from the ["u", "30617:<pubkey>:<identifier>", "<relay hint>"] tag.
["u", "30617:<pubkey>:<identifier>", "<relay hint>"]
Optional
Returns the upstream repository pointer (the repo this one was forked from), if declared. Parsed from the
["u", "30617:<pubkey>:<identifier>", "<relay hint>"]tag.