$ git clone -n https://src.fedoraproject.org/rpms/ghc-semigroups.git /var/lib/mock/f38-build-side-42-init-devel-712017-27252/root/chroot_tmpdir/scmroot/ghc-semigroups
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-712017-27252/root/chroot_tmpdir/scmroot/ghc-semigroups'...
$ git fetch origin 48253ef5ce828af8c34c402fb33c6c7b7013779c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-semigroups
 * [new ref]         48253ef5ce828af8c34c402fb33c6c7b7013779c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 48253ef Convert to %autorelease and %autochangelog