$ git clone -n https://src.fedoraproject.org/rpms/rakudo-zef.git /var/lib/mock/f31-build-65068-29626/root/chroot_tmpdir/scmroot/rakudo-zef
Cloning into '/var/lib/mock/f31-build-65068-29626/root/chroot_tmpdir/scmroot/rakudo-zef'...
$ git reset --hard 06d45b5d0d0a39385cf75aee158db43c023c8313
HEAD is now at 06d45b5 - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild