$ git clone -n https://src.fedoraproject.org/rpms/ghc-gitrev.git /var/lib/mock/f33-build-160859-43420/root/chroot_tmpdir/scmroot/ghc-gitrev
Cloning into '/var/lib/mock/f33-build-160859-43420/root/chroot_tmpdir/scmroot/ghc-gitrev'...
$ git reset --hard 9949891782691cd500d4a8ddb9e71e53583565cf
HEAD is now at 9949891 - Rebuilt for https://fedoraproject.org/wiki/Fedora_32_Mass_Rebuild