$ git clone -n https://src.fedoraproject.org/rpms/ghc-bytes.git /var/lib/mock/f41-build-840616-160821/root/chroot_tmpdir/scmroot/ghc-bytes
Cloning into '/var/lib/mock/f41-build-840616-160821/root/chroot_tmpdir/scmroot/ghc-bytes'...
$ git reset --hard ad5db79fef171281f4ab73525481335e3c229a6c
HEAD is now at ad5db79 https://hackage.haskell.org/package/bytes-0.17.3/changelog