I actively do not want this in a file copy utility, relying on extended file attributes is a massive anti-pattern. If you care about time stamps, they go in the file format itself. If you care about permissions, those belong in the provisioning and access systems in front of the file. The web application or other API that is providing the access.

I expect file attributes of the target to be what I say they should be, not copied over from wherever the content happened to live before.