$ git clone -n https://gitee.com/opencloudos-stream/systemd.git /var/lib/mock/dist-ocs23-build-21180-1041/root/chroot_tmpdir/scmroot/systemd
Cloning into '/var/lib/mock/dist-ocs23-build-21180-1041/root/chroot_tmpdir/scmroot/systemd'...
$ git fetch origin HEAD:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/systemd
 * [new ref]                    -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3422ece !1 upgrade to v253 Merge pull request !1 from cunshunxia/master