$ git clone -n https://src.fedoraproject.org/rpms/ghc.git /var/lib/mock/f38-build-687304-81775/root/chroot_tmpdir/scmroot/ghc
Cloning into '/var/lib/mock/f38-build-687304-81775/root/chroot_tmpdir/scmroot/ghc'...
$ git reset --hard b5d643a65e82413c8a6eea8d3b0a219b0fa630e8
HEAD is now at b5d643a ppc64le: disable parallel GC in hadrian temporarily (before !5725)