Build a Minimal Git in Rust: Objects, Hashes, Commits and Log

I built a MiniGit in Rust to understand how Git works internally

Git is one of those tools we use every day, but many times it feels like a black box.

We know how to run:

git init
git commit
git log

But what actually happens inside?

I wrote a full Spanish tutorial where we build a small educational version of Git in Rust, step by step.

The project creates a .minigit folder and implements the core ideas behind Git:

• Reading files as exact bytes
• Creating blob objects
• Calculating SHA-1 hashes like Git
• Saving objects by hash
• Recovering content from objects
• Creating minimal commits
• Updating refs/heads/main
• Walking commit history with log

The goal is not to replace Git.

The goal is to open the black box and understand the model:

file
  ↓
exact bytes
  ↓
blob object
  ↓
SHA-1
  ↓
.minigit/objects/<hash>
  ↓
commit
  ↓
refs/heads/main
  ↓
log

This tutorial is especially useful if you are learning Rust, Git internals, systems programming, or how content-addressed storage works.

The article is in Spanish, but the code is simple and easy to follow.

Read the full tutorial here:

https://tucodigocotidiano.yarumaltech.com/leer_tutoriales/tu-propio-git-minimo-en-rust-objetos-hashes-commits-y-log/

I would love to know what you think, especially if you are also interested in building developer tools from scratch.