The group's check has no name lookup, so go failed on the network before it
could say it knew no such revision, and the fetch, reading go's words, took
the asked head for a download failure. Whether a commit is a pull request's
head is now the forge's fact, asked whenever go cannot fetch it; go's words
only label a commit on no head (issue 1748, issue 1126 review 2).
Claude-Session: https://claude.ai/code/session_01NcbgfJ9Gum47zkFKWRaovL
jschoubben
7c5df1d7aa