Allow extra project globs from another repo

I have recently came across an idea for a potential “feature”, which might be useful or completely bonkers, I cannot really tell myself.

I think I might have a use case for defining Stack extra project globs in another repository than the Stack’s one, i.e., I would like the Stack to be triggered when file in another repository changes. The definition (for GitHub) could look something like: <org>/<repo>:<glob>

How would I use it? We have a sort of collector repo, which holds versions of artifacts, e.g., docker containers. These are pushed and committed by automated workflows building the artifacts. I would like to subscribe Stacks in other repos to be triggered when their artifacts change.

There are sure other solutions to this, I just wanted to make this idea public and see where it is gonna lead. Thanks!