# Custom Stack FT Lab: Mid-Size Repo (~50K LoC) Üzerinde Repo-Tuned Model

> Source: https://sukruyusufkaya.com/learn/fine-tuning-cookbook/ftc-custom-stack-repo-tuned-model
> Updated: 2026-08-14T18:30:55.134Z
> Category: Fine-Tuning Cookbook (Model-by-Model)
> Module: Part VIII — Code Models & Repo-Level FT
**TLDR:** Şirket internal kod tabanına özel FT: 50K LoC Python+TypeScript repo. Dosya hiyerarşisi koruma, internal symbol awareness (class/func adları), test file pairing, commit history mining (good/bad code), 7B model RTX 4090'da 4-6 saat FT.