$ git clone -n https://gitee.com/src-opencloudos-rpms/systemd.git /var/lib/mock/dist-oc9-build-251941-84156/root/chroot_tmpdir/scmroot/systemd
Cloning into '/var/lib/mock/dist-oc9-build-251941-84156/root/chroot_tmpdir/scmroot/systemd'...
$ git fetch origin 61015fa487b969a5bc611b7aa582fa66ddd72a8b:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/systemd
 * [new ref]         61015fa487b969a5bc611b7aa582fa66ddd72a8b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 61015fa import systemd-255-20.tl4.ap.7