$ git clone -n https://gitee.com/src-opencloudos-rpms/systemd.git /var/lib/mock/dist-oc8-build-74374-50102/root/chroot_tmpdir/scmroot/systemd
Cloning into '/var/lib/mock/dist-oc8-build-74374-50102/root/chroot_tmpdir/scmroot/systemd'...
$ git fetch origin bd6da2c822f815b911f3379d9406d723dfeb82ae:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/systemd
 * [new ref]         bd6da2c822f815b911f3379d9406d723dfeb82ae -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bd6da2c import systemd-239-82.tl3.1