Merge branch 'jt/clone-guess-remote-head-fix'

"git clone" still gave the message about the default branch name;
this message has been turned into an advice message that can be
turned off.

* jt/clone-guess-remote-head-fix:
  advice: allow disabling default branch name advice
  builtin/clone: suppress unexpected default branch advice
  remote: allow `guess_remote_head()` to suppress advice

builtin/fetch.c

@@ -1638,7 +1638,7 @@ static int set_head(const struct ref *remote_refs, struct remote *remote)
 
 	get_fetch_map(remote_refs, &refspec, &fetch_map_tail, 0);
 	matches = guess_remote_head(find_ref_by_name(remote_refs, "HEAD"),
-				    fetch_map, 1);
+				    fetch_map, REMOTE_GUESS_HEAD_ALL);
 	for (ref = matches; ref; ref = ref->next) {
 		string_list_append(&heads, strip_refshead(ref->name));
 	}