No need for assembly for code hash

[fulldecent]

https://github.com/nibbstack/erc721/blob/77030ec2a25123d17b13e7ee469f1c956a48451c/src/contracts/utils/address-utils.sol

.codehash

Docs: https://docs.soliditylang.org/en/v0.8.11/units-and-global-variables.html?highlight=codehash#members-of-address-types