$ git clone -n https://src.fedoraproject.org/rpms/ghc-byteorder.git /var/lib/mock/f38-build-side-42-init-devel-861319-28428/root/chroot_tmpdir/scmroot/ghc-byteorder
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-861319-28428/root/chroot_tmpdir/scmroot/ghc-byteorder'...
$ git fetch origin 6a868dd07fc778be6ab4b4c1d57c59f86a53feab:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-byteorder
 * [new ref]         6a868dd07fc778be6ab4b4c1d57c59f86a53feab -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6a868dd Convert to %autorelease and %autochangelog