The definitive deep dive into the git folder
summary
Creates a repo and opens .git to show exact storage: commits trees blobs live as zlib‑compressed objects, first two hex chars as folder names, and blobs store whole file contents (so amended secrets still exist until gc). Demonstrates zlib decompression with a custom unzipper Node tool, inspects objects with git cat-file and git ls-files, visualizes the graph with git-explorer, shows bare remote pushes, refs and reflogs, hook examples, index behavior, git instaweb, and config aliases.
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chapters (19)
- 0:00Introduction and setup
- 2:33Creating a Git repository
- 3:59Exploring the .git folder structure
- 5:25Understanding Git objects
- 8:14Commits, trees, and blobs
- 10:02Git Explorer demo
- 13:16Adding folders and files
- 15:25Modifying and amending commits
- 18:47Git garbage collection and secrets
- 21:00Refs and branches
- 22:30Detached HEAD state
- 26:48Remote branches and servers
- 31:07Git hooks for automation
- 35:07Exclude and ignore files
- 36:33The index file explained
- 38:04Git instaweb server
- 39:10Git config files
- 42:42Git aliases and shortcuts
- 43:48Summary and resources
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