$ git clone -n https://gitee.com/src-opencloudos-rpms/systemd.git /var/lib/mock/dist-oc9-build-247465-83573/root/chroot_tmpdir/scmroot/systemd
Cloning into '/var/lib/mock/dist-oc9-build-247465-83573/root/chroot_tmpdir/scmroot/systemd'...
$ git fetch origin f5bf399c6501d5dd76e263ed22d8ee1080ca8ce5:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/systemd
 * [new ref]         f5bf399c6501d5dd76e263ed22d8ee1080ca8ce5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f5bf399 import systemd-255-20.tl4.ap.4