$ git clone -n https://src.fedoraproject.org/rpms/ghc-generic-deriving.git /var/lib/mock/f31-build-93959-32453/root/chroot_tmpdir/scmroot/ghc-generic-deriving
Cloning into '/var/lib/mock/f31-build-93959-32453/root/chroot_tmpdir/scmroot/ghc-generic-deriving'...
$ git reset --hard 08e8c5b9c56a3cdfa41dfd49668742adef616903
HEAD is now at 08e8c5b BR prof for lib and static for executable