Feature request: Trigger a notification a commit reference a pull request or an issue

Currently, when a commit reference a commit or a pull request, this create a reference in that issue or pull request.

It would be great that this trigger a notification.
When contributing to big open-source project, this allows to get notification related to the issue/pull request you are subscribed without seeing everything in the repository.

For big open source project, seeing everything in the repository isn’t useful for outside contributor as there is too much information.