You could consider pulling those changes. Each repo should contain just enough config to know how / where to fetch its config + whatever is unique to this repo.

You could consider pulling those changes. Each repo should contain just enough config to know how / where to fetch its config + whatever is unique to this repo. You don't share any details about how you manage configs currently but during your build process you can pull/import/load common configuration from a shared respository whether that's a git repo or etcd cluster or whatever fits your environment.