HEAD is Git's pointer to the current branch or commit. Think of it as a bookmark, keeping track of where you are in your project's timeline.
Unlike traditional static bookmarks, HEAD moves as you interact with your repository, always pointing to the latest commit you're on.
Typically, HEAD points to the tip of your current branch. When you create or switch branches, HEAD adjusts its pointer accordingly.
In some scenarios, like during interactive rebases or when checking out a specific commit, HEAD can point directly to a commit instead of a branch, leading to a "detached HEAD" state.
Imagine the universe of your project, where each star is a commit. HEAD is like your spaceship, and as you navigate from star to star (commit to commit), it always shows your current position in this vast space.
To see where HEAD currently points, use
git log --oneline --decorate -n 1.
If you find yourself in a detached HEAD state, don't panic! Create a new branch to save your position, or use
git checkoutto return to familiar territory.
Remember, HEAD is your navigation tool in the Git cosmos, always helping you understand your position in the project's history. Safe travels! 🌠