A hands-on intro to Git internals: creating a repo from scratch

The blog post delves into the intricate workings of Git by exploring its internals beyond the common user-friendly commands known as "porcelain." It offers a deep dive into the "plumbing" commands, which are the low-level operations that underpin Git's functionality. By manually creating a Git repository without using typical commands like git init, git add, or git commit, the post illustrates how repositories are structured, how objects like blobs, trees, and commits are formed, and how branches operate under the hood. The author, Omer Rosenbaum, shares insights into how the SHA-1 hash values are utilized to manage objects, and how the staging area, or index, plays a crucial role in tracking changes. The post also demonstrates how to create and switch between branches using plumbing commands, emphasizing the distinction between the command layers and encouraging readers to explore Git's foundational processes for a more thorough understanding.