$ git clone -n https://src.fedoraproject.org/rpms/ghc-HSH.git /var/lib/mock/f38-build-side-42-init-devel-982406-29040/root/chroot_tmpdir/scmroot/ghc-HSH
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-982406-29040/root/chroot_tmpdir/scmroot/ghc-HSH'...
$ git fetch origin 6b8dba2a439c7bd787267f57a93c1f632f810dc8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-HSH
 * [new ref]         6b8dba2a439c7bd787267f57a93c1f632f810dc8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6b8dba2 Convert to %autorelease and %autochangelog