$ git clone -n https://src.fedoraproject.org/rpms/ghc-th-compat.git /var/lib/mock/f38-build-side-42-init-devel-847547-28422/root/chroot_tmpdir/scmroot/ghc-th-compat
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-847547-28422/root/chroot_tmpdir/scmroot/ghc-th-compat'...
$ git fetch origin 472ef5725b43213234ee43ff3ea32e0ebb9ae7e9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-th-compat
 * [new ref]         472ef5725b43213234ee43ff3ea32e0ebb9ae7e9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 472ef57 Convert to %autorelease and %autochangelog