The person you're responding to is wrong. CLAs are not transfers of copyright ownership or code ownership. They're only licenses (that's the "L" in "CLA") that

The person you're responding to is wrong. CLAs are not transfers of copyright ownership or code ownership. They're only licenses (that's the "L" in "CLA") that grant the recipient a set of rights for how they are allowed to use your code that you retain ownership over.