$ git clone -n https://src.fedoraproject.org/rpms/ghc-cheapskate.git /var/lib/mock/f38-build-side-42-init-devel-673622-26681/root/chroot_tmpdir/scmroot/ghc-cheapskate
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-673622-26681/root/chroot_tmpdir/scmroot/ghc-cheapskate'...
$ git fetch origin 390b1a108c44664c737e2f2c377eb135fe38bd5c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-cheapskate
 * [new ref]         390b1a108c44664c737e2f2c377eb135fe38bd5c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 390b1a1 Convert to %autorelease and %autochangelog