Git's Staging Area Explained: The Mechanism Between Add and Commit

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Git uses a three-layer model: the working directory, the staging area, and the repository. The staging area acts as a temporary holding space for changes selected for the next commit. When a user runs 'git add', a snapshot of the file's content at that moment is recorded in the staging area. The 'git commit' command then permanently saves a snapshot of the staging area into the repository. This separation allows developers to precisely control what changes are included in a commit.

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