$ git clone -n https://src.fedoraproject.org/rpms/ghc-old-locale.git /var/lib/mock/f38-build-side-42-init-devel-711884-27250/root/chroot_tmpdir/scmroot/ghc-old-locale
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-711884-27250/root/chroot_tmpdir/scmroot/ghc-old-locale'...
$ git fetch origin b9e2ba5820345dd4f48b3ab526234a575fb6e73a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-old-locale
 * [new ref]         b9e2ba5820345dd4f48b3ab526234a575fb6e73a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b9e2ba5 Convert to %autorelease and %autochangelog