I've got a tag I build against very infrequently (maybe 5 builds per year). It inherits from a tag I build against daily. As a result I end up with a lot of regen-repo tasks for a tag I'm unlikely to use near term.

Basically I'd love to be able to define the following behavior:
- If a package was tagged into the repo, regen as normal
- If my inherited repos have changed content, whenever any sort of 'build' is triggered have it run a 'waitrepo' and run a new regen-repo at that time.

This would be similar to how koji behaves for the very first build against a target where it has no existing repodata.