Encrypted APFS clones

[dnanian]

Again, any behavior here is undocumented by Apple. It's hard to know what it might or might not do.

You can, of course, use tmutil from a before/after copy script to do things with Time Machine. You could, for example, turn it off before copying and then turn it on after. That could potentially have it be off on the backup. But, any copy failures would leave TM off, which you'd have to watch out for.