$ git clone -n https://src.fedoraproject.org/rpms/ghc-fclabels.git /var/lib/mock/f41-build-837909-159471/root/chroot_tmpdir/scmroot/ghc-fclabels
Cloning into '/var/lib/mock/f41-build-837909-159471/root/chroot_tmpdir/scmroot/ghc-fclabels'...
$ git fetch origin 0d893a720b16c0b8aa62872d055db78afb1e4f53:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-fclabels
 * [new ref]         0d893a720b16c0b8aa62872d055db78afb1e4f53 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0d893a7 refresh .cabal revision; disable tests