To initiliaze catalog-template.json
$ opm migrate registry.redhat.io/redhat/redhat-operator-index:v4.16 ./catalog-migrate
$ mkdir -p v4.16/catalog/cluster-kube-descheduler-operator
$ opm alpha convert-template basic ./catalog-migrate/cluster-kube-descheduler-operator/catalog.json > v4.16/catalog-template.json
To update the catalog
$ cd v4.16
$ opm alpha render-template basic catalog-template.json > catalog/cluster-kube-descheduler-operator/catalog.json