}
 
        /* parse all options sent by the client */
-       return write_archive(sent_argv.argc, sent_argv.argv, prefix, 0, NULL, 1);
+       return write_archive(sent_argv.argc, sent_argv.argv, prefix, NULL, 1);
 }
 
 __attribute__((format (printf, 1, 2)))
        writer.git_cmd = 1;
        if (start_command(&writer)) {
                int err = errno;
-               packet_write(1, "NACK unable to spawn subprocess\n");
+               packet_write_fmt(1, "NACK unable to spawn subprocess\n");
                die("upload-archive: %s", strerror(err));
        }
 
-       packet_write(1, "ACK\n");
+       packet_write_fmt(1, "ACK\n");
        packet_flush(1);
 
        while (1) {