How Git Really Works — Git Internals Explained (Objects, Trees, Commits & Refs)
Git isn't version control — it's a content-addressed key-value store wearing a VCS costume. This is Git internals explained from first principles: how Git actually stores your code as objects (blob, tree, commit, tag), why a commit is a snapshot — not a diff — and how branches, reset, rebase and the reflog are just pointers moving over a database of fingerprints. Learn the four objects and the pointers, and every Git command finally makes sense.
⌕ SHERLOCKED · The Case Files — how X really works, deduced.
Chapters:
0:00 The impossible archive (Git stored nothing)
0:38 Content-addressing: hashing your code
1:15 The four rooms of .git
1:41 The blob — a witness with no name
2:08 The tree — where filenames hide
2:31 The commit — snapshot + parent
2:56 Snapshots, not diffs
3:21 A branch is a 41-byte file
3:51 git add vs git commit
4:12 reset, rebase & the reflog — nothing is ever lost
4:55 Case closed
5:27 The origin — 2005, Linus & BitKeeper
6:26 The field manual — every command as a move
Topics: git internals, git objects, content-addressable storage, SHA-1, blob / tree / commit / tag, snapshots vs diffs, refs and HEAD, reset / rebase / reflog, how Git was built.
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