How to prevent replication of Content Types originating from the Content Type Hub?

I would like to exclude from Site Collection replication: Site Content Types which originate from the Content Type Hub (CTH).

Those CTH Site Content Types are set to Read-only in SP 2013, so any replicated changes will error at the target Farms:
"The content type "Some CT Name" at "/site/collection" is read only."

However, changes to Site Content Types, which exist only in the replicated Site Collection, should replicate.

What would the best approach to get this configured?
(I looked at unchecking Events and at Rules, but found no solution.)

We use Replicator version 7.4.2002 on SharePoint 2013 on-premise (15.0.5207).