$ git clone -n https://gitee.com/src-opencloudos-rpms/polkit.git /var/lib/mock/dist-oc9-build-180178-80073/root/chroot_tmpdir/scmroot/polkit
Cloning into '/var/lib/mock/dist-oc9-build-180178-80073/root/chroot_tmpdir/scmroot/polkit'...
$ git fetch origin 4fbce1e4538524623cb07eb2e5dfd8f4f57344c1:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/polkit
 * [new ref]         4fbce1e4538524623cb07eb2e5dfd8f4f57344c1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4fbce1e import polkit-123-5.tl4