transport-helper: check for 'forced update' message

So the remote-helpers can tell us when a forced push was needed.

Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

transport-helper.c

@@ -643,7 +643,7 @@ static int push_update_ref_status(struct strbuf *buf,
 				   struct ref *remote_refs)
 {
 	char *refname, *msg;
-	int status;
+	int status, forced = 0;
 
 	if (!prefixcmp(buf->buf, "ok ")) {
 		status = REF_STATUS_OK;
@@ -701,6 +701,11 @@ static int push_update_ref_status(struct strbuf *buf,
 			free(msg);
 			msg = NULL;
 		}
+		else if (!strcmp(msg, "forced update")) {
+			forced = 1;
+			free(msg);
+			msg = NULL;
+		}
 	}
 
 	if (*ref)
@@ -722,6 +727,7 @@ static int push_update_ref_status(struct strbuf *buf,
 	}
 
 	(*ref)->status = status;
+	(*ref)->forced_update = forced;
 	(*ref)->remote_status = msg;
 	return !(status == REF_STATUS_OK);
 }