const char *vhost)
 {
        if (!vhost)
-               packet_write(stdin_fd, "%s %s%c", serv, repo, 0);
+               packet_write_fmt(stdin_fd, "%s %s%c", serv, repo, 0);
        else
-               packet_write(stdin_fd, "%s %s%chost=%s%c", serv, repo, 0,
+               packet_write_fmt(stdin_fd, "%s %s%chost=%s%c", serv, repo, 0,
                             vhost, 0);
 }