How to diff contracts against Etherscan verified code

Diffyscan is a CLI tool developed by Lido that allows security researchers to compare the source code of verified smart contracts in Etherscan against a GitHub repository. It retrieves the files from Etherscan, locates them in the repository, and performs a diff to identify any differences. It can be useful for verifying code consistency and quickly identifying potential discrepancies between deployed contracts and their GitHub counterparts.