$ git clone -n https://gitee.com/src-opencloudos-rpms/mrtg.git /var/lib/mock/dist-oc9-build-246681-83491/root/chroot_tmpdir/scmroot/mrtg
Cloning into '/var/lib/mock/dist-oc9-build-246681-83491/root/chroot_tmpdir/scmroot/mrtg'...
$ git fetch origin f592f5f2fef7fbbb02f5ba20f433051fd90508e2:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/mrtg
 * [new ref]         f592f5f2fef7fbbb02f5ba20f433051fd90508e2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f592f5f import mrtg-2.17.10-7.tl4