The only thing I'm aware of is a new feature in Commons > Admin > Stats, that will show you the number of times the content was downloaded. Beyond that the information is pretty sparse. I'm not even sure if Canvas stores where a courses content comes from, which would be helpful.
I have been working to track our content using the information from that page and Canvas Data to try and identify courses that are using our commons content. It is a slow and cumbersome process that has involved cleaning up all the commons (and before commons course masters) by adding naming conventions and using the existing fields in the UI and Canvas Data.
Would love something better, or any tips.