$ git clone -n https://gitee.com/src-opencloudos-rpms/systemd.git /var/lib/mock/dist-oc9-build-252241-84174/root/chroot_tmpdir/scmroot/systemd
Cloning into '/var/lib/mock/dist-oc9-build-252241-84174/root/chroot_tmpdir/scmroot/systemd'...
$ git fetch origin 0b7acb24e653f3fb2f08ed5c4c83b8ae660c0ccf:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/systemd
 * [new ref]         0b7acb24e653f3fb2f08ed5c4c83b8ae660c0ccf -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0b7acb2 import systemd-255-20.tl4.ap.8