Describe the enhancement

Expand the scope of responsibility of the cas experiment to also support source clones.

Additional context

This is a pretty impactful subsystem, so we'd want to make sure this is tested well.

PoC (Proof of Concept)

Link to a Proof of Concept if you have one:

• PoC

Including a PoC can help others understand the feature better and implement it faster.

RFC Not Needed

• I have evaluated the complexity of this enhancement, and I believe it does not require an RFC.