Ask HN: Any AI tools that help you make sense of a large repo?

I'm trying to understand some large codebases. Current LLMs can understand code snippets but not large repositories with their complex structures. For example, we need tools that can make sense of the Linux source code. If I ask about changing a file system or thread locking mechanism, such tools should point to the most relevant files and help me understand how other code would be affected. Perhaps something like the repository map feature in Aider? But would love a cursor like chat interface to help make sense of code repository.