Explain what the Detached Head state in Git means and when it occurs.

The Detached Head state in Git occurs when the HEAD pointer does not point to a branch, but directly to a specific commit. This happens, for example, if you switch to a commit by its hash or to a tag, rather than a branch. In this state, any commits will not be associated with a branch and may be lost when switching branches.

Example:

git checkout <commit-hash>

Now you are in Detached HEAD. To save changes, you need to create a new branch:

git checkout -b new-branch