$ git clone -n https://gitee.com/src-opencloudos-rpms/polkit.git /var/lib/mock/dist-oc8-build-249236-83800/root/chroot_tmpdir/scmroot/polkit
Cloning into '/var/lib/mock/dist-oc8-build-249236-83800/root/chroot_tmpdir/scmroot/polkit'...
$ git fetch origin b23c64f48f503c51e33199932bebd9118218e1e5:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/polkit
 * [new ref]         b23c64f48f503c51e33199932bebd9118218e1e5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b23c64f import polkit-0.115-15.tl3.3