$ git clone -n https://src.fedoraproject.org/rpms/ghc-hashtables.git /var/lib/mock/f31-build-100219-33237/root/chroot_tmpdir/scmroot/ghc-hashtables
Cloning into '/var/lib/mock/f31-build-100219-33237/root/chroot_tmpdir/scmroot/ghc-hashtables'...
$ git reset --hard 0eabc8c0fd7481d7a4a408c2f926f367f94de94c
HEAD is now at 0eabc8c BR prof for lib and static for executable