I don't really need to see the code but there are some proxy questions.

Two of Joel questions cover example downsides (slow builds, bad tooling), post is from year 2000 - so in theory asking about source control might be silly but if company is not using GIT in 2022 I would slowly (not to make any sudden moves) try to find my way out of the interview room because there is seriously something wrong there.

https://www.joelonsoftware.com/2000/08/09/the-joel-test-12-s...