$ git clone -n https://src.fedoraproject.org/rpms/gtk2hs-buildtools.git /var/lib/mock/f38-build-side-42-init-devel-952705-28780/root/chroot_tmpdir/scmroot/gtk2hs-buildtools
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-952705-28780/root/chroot_tmpdir/scmroot/gtk2hs-buildtools'...
$ git fetch origin 8a463ec9347f9cde7331f73d2efc4ee9e3510a2a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gtk2hs-buildtools
 * [new ref]         8a463ec9347f9cde7331f73d2efc4ee9e3510a2a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8a463ec refresh to cabal-rpm-2.1.0 including SPDX migration