There are a lot of situations where you do need more context of the repository. If you do have a problem in a small function then yes, you could just copy/paste

There are a lot of situations where you do need more context of the repository. If you do have a problem in a small function then yes, you could just copy/paste the code to any LLM and it could help you, but you can't do more than that. Usually when you work with code you work with other people's code, especially in companies, you either need to understand it (which requires many files awareness), or you need a junior to understand the project, or you need system design level advice, or you need to know that if you make a certain change, it wouldn't create bugs that you'll not be aware of at the moment, and the list goes on. Pasting bits of code in a gpt just gets you so far, at least that was my case, so I built it for myself at the beginning. It does help a lot.