$ git clone -n https://src.fedoraproject.org/rpms/ghc-derive.git /var/lib/mock/f31-build-99895-33209/root/chroot_tmpdir/scmroot/ghc-derive
Cloning into '/var/lib/mock/f31-build-99895-33209/root/chroot_tmpdir/scmroot/ghc-derive'...
$ git reset --hard 0efb90cc35144c5d1596490471e8b9e4e5dd0fdd
HEAD is now at 0efb90c BR prof for lib and static for executable