$ git clone -n https://gitee.com/zxy19951122/polkit-gnome.git /var/lib/mock/dist-an8.8-build-293673-65192/root/chroot_tmpdir/scmroot/polkit-gnome
Cloning into '/var/lib/mock/dist-an8.8-build-293673-65192/root/chroot_tmpdir/scmroot/polkit-gnome'...
$ git fetch origin 8dc0808e012c102fe496666c25dbb1558679971a:KOJI_FETCH_HEAD
From https://gitee.com/zxy19951122/polkit-gnome
 * [new ref]         8dc0808e012c102fe496666c25dbb1558679971a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8dc0808 import polkit-gnome-0.106-0.2.20170423gita0763a2.el8