$ git clone -n https://src.fedoraproject.org/rpms/ghc-yaml.git /var/lib/mock/f38-build-side-42-init-devel-913594-28706/root/chroot_tmpdir/scmroot/ghc-yaml
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-913594-28706/root/chroot_tmpdir/scmroot/ghc-yaml'...
$ git fetch origin d12525074bb93d002e1e3ed42bd776a04acdb68d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-yaml
 * [new ref]         d12525074bb93d002e1e3ed42bd776a04acdb68d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d125250 refresh to cabal-rpm-2.1.0 with SPDX migration