$ git clone -n https://src.fedoraproject.org/rpms/ghc-binary-shared.git /var/lib/mock/f31-build-99463-33164/root/chroot_tmpdir/scmroot/ghc-binary-shared
Cloning into '/var/lib/mock/f31-build-99463-33164/root/chroot_tmpdir/scmroot/ghc-binary-shared'...
$ git reset --hard dc9fe51f783f9cf7c42bda8f20a693332bd260d1
HEAD is now at dc9fe51 BR prof for lib and static for executable