$ git clone -n https://gitee.com/src-opencloudos-rpms/systemd.git /var/lib/mock/dist-oc9-build-124196-73748/root/chroot_tmpdir/scmroot/systemd
Cloning into '/var/lib/mock/dist-oc9-build-124196-73748/root/chroot_tmpdir/scmroot/systemd'...
$ git fetch origin 81e383c818d13913ac9c62101fa162f7f81729a4:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/systemd
 * [new ref]         81e383c818d13913ac9c62101fa162f7f81729a4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 81e383c import systemd-255-12.tl4.ap.1