in the modular compose world, we should do a diff of modules and the packages in them that actually changed. There is an example compose report https://kojipkgs.fedoraproject.org/compose/Fedora-Modular-Bikeshed-20171005.n.0/logs/ using the existing compose-changelog
First proposal for fix in #63.
This issue has been migrated to Fedora Forge: https://forge.fedoraproject.org/pungi/compose-utils/issues/62
Please continue any further discussion there.