Create a config/manifest.edn file based on config/manifest.edn.example. You will need to set the map under the client-cfg key to be the args you use for d/client. Then

clojure -m datomic.mbrainz.importer config/manifest.edn

Don't do this unless you know what you are doing. Never import at different batch sizes into the same db.

clojure -m datomic.mbrainz.importer.batch subsets {batch-size}