Migrate hub.db data to hub in new K8s cluster

I installed the JH application by helm on a k8s cluster. Now I want to move the hub from one cluster to another environment (for example from a local k8s cluster to a GKE), how should I migrate my database data to the new cluster?

(For migrating user data, I find this helpful.)

By default, new pvc and pv will be created dynamically when the new application is installed. Can I set hub.db parameters to bind this database to existing pvc and pv, or I can only move data into the new pv after it is created?

I dont work with kubernetes environment. But I guess you can take a DB dump from your existing cluster and create a new DB on your new cluster from this dump file?