Key concepts

Commit hash

A commit hash is a unique identifier for each commit in Git. It's a 40-character hexadecimal string that serves as a unique address for the commit. You can use the first few characters of the hash to refer to a commit, as long as it's unique within the repository. For example:

Full hash: 346ca091076783c70623aba03fb7139d3d27134f
Shortened hash: 346ca09

The commit hash is crucial for identifying and working with commits in Git. It allows you to reference specific commits when checking out, reverting, or comparing changes.

Gitopedia is a companion to the main GitByBit course, designed to serve as your personal Git knowledge base. New topics unlock gradually as you progress, giving you time to build a solid mental model of Git.

Learning directly in VS Code lets you practice Git exactly as you would in real life, doing real work and writing real code. In addition, the course connects to your actual terminal, so it can point out mistakes and suggest workarounds when you need them.

The course is FREE, with no ads or other nonsense. An optional premium add-on focused on teamwork is available if you'd like to support my work (regrettably, I have to eat every day), but that's entirely up to you.

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