$ git clone -n https://src.fedoraproject.org/rpms/selinux-policy.git /var/lib/mock/f41-build-1049369-19179/root/chroot_tmpdir/scmroot/selinux-policy
Cloning into '/var/lib/mock/f41-build-1049369-19179/root/chroot_tmpdir/scmroot/selinux-policy'...
$ git fetch origin dc43abd655074fc2c8a1914958b6f56f4d3f0c92:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/selinux-policy
 * [new ref]             dc43abd655074fc2c8a1914958b6f56f4d3f0c92 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dc43abd65 Include "mode" in the %verify-not configuration for extra_varrun