Yes, kinda. At least UIUC did that to students who had libraries from the coding exercises. For example, the cs225 course provides an image processing library,

Yes, kinda. At least UIUC did that to students who had libraries from the coding exercises. For example, the cs225 course provides an image processing library, and you need it for the assignment, so if you put the library in the repo they DMCA'd. Similarly, many courses give you a framework of code. If you filled in the framework they would DMCA. They did this a bit, but there was a pretty massive back lash. I don't think they are doing it atm