trailer: be stricter in parsing separators

diff --git a/shallow.c b/shallow.c
index 2531e3af3b0d87e1f78fe09208cb85917ceff207..4d0b005d39c1c1ab2379911666d4df75d66b824c 100644 (file)
--- a/shallow.c
+++ b/shallow.c
@@ -338,7 +338,7 @@ static int advertise_shallow_grafts_cb(const struct commit_graft *graft, void *c
 {
        int fd = *(int *)cb;
        if (graft->nr_parent == -1)
-               packet_write(fd, "shallow %s\n", oid_to_hex(&graft->oid));
+               packet_write_fmt(fd, "shallow %s\n", oid_to_hex(&graft->oid));
        return 0;
 }