$ git clone -n https://src.fedoraproject.org/rpms/kscreen.git /var/lib/mock/f41-build-855565-167171/root/chroot_tmpdir/scmroot/kscreen
Cloning into '/var/lib/mock/f41-build-855565-167171/root/chroot_tmpdir/scmroot/kscreen'...
$ git fetch origin 95e5271e18c23da5961d5ca6aca26d7336f9df44:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kscreen
 * [new ref]         95e5271e18c23da5961d5ca6aca26d7336f9df44 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 95e5271 6.1.90