$ git clone -n https://src.fedoraproject.org/rpms/ghc-yaml.git /var/lib/mock/f39-build-1993291-43416/root/chroot_tmpdir/scmroot/ghc-yaml
Cloning into '/var/lib/mock/f39-build-1993291-43416/root/chroot_tmpdir/scmroot/ghc-yaml'...
$ git fetch origin 53992d0d6cc651fd66826864375e952290d95086:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-yaml
 * [new ref]         53992d0d6cc651fd66826864375e952290d95086 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 53992d0 update to 0.11.11.2