There is a Dependency section in Kamelet reference DOC (given avro-deserialize as an example)

2.2. DEPENDENCIES
At runtime, the avro-deserialize-action Kamelet relies upon the presence of the following
dependencies:
github:openshift-integration.kamelet-catalog:camel-kamelets-utils:master-SNAPSHOT 

You can see that there is reference to the GitHub url but the real Kamelet is dependent on the PROD artifact `mvn:org.apache.camel.kamelets:camel-kamelets-utils:1.0.0.fuse-800048-redhat-00001`

This applies to all Kamelets dependent on the kamelet-utils.