$ git clone -n https://src.fedoraproject.org/rpms/ghc-libBF.git /var/lib/mock/f41-build-839505-160201/root/chroot_tmpdir/scmroot/ghc-libBF
Cloning into '/var/lib/mock/f41-build-839505-160201/root/chroot_tmpdir/scmroot/ghc-libBF'...
$ git reset --hard ef04cf48d0433344efb25a0d745057b5d48dfd88
HEAD is now at ef04cf4 bump release