Copy a Hash with data from another contract on init

[crosschainer]

I would like to request a function that is able to copy a hash with its data to another contract. Not ForeignHash but a real copy.

[Endogen]

But why only on init? There should be the possibility to copy a Hash from an imported contract into a Hash of the current contract.

I already had that requirement before: https://github.com/Lamden/contracting/issues/294