Any way to clean up local manifests? "There are N manifests found locally that are not on the target destination."

[digitalsignalperson]

I'm using a bucket policy to delete older backups from S3 automatically. When I use zfsbackup-go list I see the expected list of backups, but also a message "There are N manifests found locally that are not on the target destination." where N is going to keep growing.

Is there any way to cleanup local manifests?

The clean option clean Clean will delete any objects in the target that are not found in the manifest files found in the target. is not applicable here