$ git clone -n https://src.fedoraproject.org/rpms/ghc-unix-compat.git /var/lib/mock/f31-build-101357-33382/root/chroot_tmpdir/scmroot/ghc-unix-compat
Cloning into '/var/lib/mock/f31-build-101357-33382/root/chroot_tmpdir/scmroot/ghc-unix-compat'...
$ git reset --hard 6843805e1b9d660e86eece33e48718df71c5b868
HEAD is now at 6843805 BR prof for lib and static for executable