$ git clone -n https://src.fedoraproject.org/rpms/vdr-skinnopacity.git /var/lib/mock/f41-build-side-1-2778958-32451/root/chroot_tmpdir/scmroot/vdr-skinnopacity
Cloning into '/var/lib/mock/f41-build-side-1-2778958-32451/root/chroot_tmpdir/scmroot/vdr-skinnopacity'...
$ git fetch origin a61aa79cbb601216b8766884e778d07b1e2ed224:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/vdr-skinnopacity
 * [new ref]         a61aa79cbb601216b8766884e778d07b1e2ed224 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a61aa79 convert GPLv2+ license to SPDX