Explanation
You can copy objects to other buckets in the same region and to buckets in other regions oci os object copy --namespace-name <object_storage_namespace> --bucket-name <source_bucket_name>
--source-object-name <source_object> --destination-namespace <destination_namespace_string>
--destination-region <destination_region> --destination-bucket <destination_bucket_name>
--destination-object-name <destination_object_name>
https://docs.cloud.oracle.com/en-us/iaas/Content/Object/Tasks/copyingobjects.htm
https://docs.cloud.oracle.com/en-us/iaas/tools/oci-cli/2.9.9/oci_cli_docs/cmdref/os/object/copy.html