$ git clone -n https://src.fedoraproject.org/rpms/ghc-vector-binary-instances.git /var/lib/mock/f31-build-112617-34295/root/chroot_tmpdir/scmroot/ghc-vector-binary-instances
Cloning into '/var/lib/mock/f31-build-112617-34295/root/chroot_tmpdir/scmroot/ghc-vector-binary-instances'...
$ git reset --hard b30c757221662ff06d81158778d40e6718e3efda
HEAD is now at b30c757 BR prof for lib and static for executable