How does Git actually work?

on YouTube ↗01h 26m

" summary

Shows exact on-disk actions: git init creates a .git with objects, refs, config and a HEAD symbolic ref; git add hashes file contents (SHA‑1), writes a compressed content‑addressed blob under objects/xx/, and records that blob in the index (the index = staging area/cache). git commit writes tree objects that reference blobs, creates a commit object with metadata and parent links, updates refs and reflogs. git reset has distinct modes (reset: soft/mixed/hard) that move HEAD, update the index, and/or overwrite the working tree; git gc prunes dangling objects.

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" chapters (32)

1. 0:00Introduction
2. 1:10Git init
3. 4:40Git description
4. 6:05Head
5. 9:35Add
6. 11:10Show on
7. 13:10Pig
8. 15:25Compression
9. 16:25Fck
10. 17:55Garbage collects
11. 20:10Pruning
12. 21:20Backup advice
13. 23:45The Index
14. 27:40Git Status
15. 28:35Update Index
16. 31:35Why is Git called Git
17. 33:20Will elute object still be in the database
18. 34:20If you delete maincc can you retrieve it
19. 35:55What is in the index
20. 37:30Add and reset
21. 38:55Index
22. 39:25Index view
23. 39:40Stage zero
24. 40:40Git index
25. 42:45Git add
26. 43:45What happens when you commit
27. 44:30Why does the index update
28. 45:40Commit edit message
29. 49:25Making a tree
30. 52:05Why tree
31. 53:40Tree objects
32. 56:55Right tree

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