--retention-mode COMPLIANCE for sync-to s3

Hello, is it possible to use S3 object locks with sync-to s3 command? Do I need to do some special configuration, or it’s enough to just pass the --no-update flag?

If it will work just with --no-update flag, can I then use the native B2 API for Backblaze - sync-to b2, or do I still need to use sync-to s3? Based on the Ransomware Protection | Kopia

Thank you.