A comprehensive, conceptual explanation of the Git version control system to help developers move beyond memorized commands and truly understand its inner workings.
The explanation begins by defining Git as a database where the fundamental unit is the commit, which is a complete snapshot of the project history connected in a Directed Acyclic Graph (DAG) structure. It then clarifies that branches and HEAD are merely pointers or "sticky notes" used to navigate this history.
The transcript further breaks down the three layers of Git—the working directory, staging area, and repository—before detailing the distinct and potentially destructive operations of key commands like checkout (moving the view), reset (moving a branch), revert (creating a corrective commit), and rebase (rewriting history by creating new commits).
Finally, the source offers the ref log as a crucial recovery mechanism for finding "lost" commits after errors.
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