Git Internals - Git Objects

This is the first actual video of this git internals series, where we will cover the main git objects - blob, tree, and commit.
I have also posted two blog posts about git internals that cover the same topics:
Part 1 - / a-visualized-intro-to-...
Part 2 - swimm.io/blog/a-hands-on-intr...
Feel free to leave comments on the videos, Like on Facebook, or follow on Twitter :)
Facebook: / briefchannel
Twitter: / omer_ros
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I often get questions about the tools I use to create Videos - so here they are :)
(When available, I may use affiliate links and may earn a commission, with NO additional cost to you)
To create the hand-drawn animations, I use VideoScribe: www.awin1.com/cread.php?awinm...
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Video created by Omer Rosenbaum. All rights reserved.

[@muhammadnajibbala4059]

Best explanation I have ever seen on this topic

[@BriefVid]

Thank you so much!

[@tejaa2532]

Outstanding explanation of the internals. A lot of info condensed into just 5 minutes. Awesome bro. 👌 hats off 👏

[@BriefVid]

Thank you so much for this kind feedback! 🙏🏻

[@realB12]

Incredible great stuff: I often have struggled to explain Git to my peers. Have tried so many different ways. Your way is the best. Thanks a lot for this!

[@BriefVid]

Thank you very much for your kind feedback!

[@BeALeaderAndAnInspir]

Amazing content mate. Please upload more tutorials like this. You have a talent for explaining things...

[@BriefVid]

Thank you very much Tien!
I have posted the next video in the series here - th-cam.com/video/52MFjdGH20o/w-d-xo.html
I hope you will find it useful

[@BarraIhsan]

Yes, I agree!

[@arastooajorian9069]

it was really well described and animated. that was perfect. thank you for your job.

[@BriefVid]

Thank you so much for your kind words!

[@always_learning_new_stuff]

Wow, wow, WOW! I've never seen such a difficult concept explained so well. Thank you.

[@BriefVid]

Thank you so much, your comment made my day 🙏🏻

[@anonymousXYZ659]

This is such a good explainer, I wish this was more popular!

[@BriefVid]

Thank you for your kind reply 🙏🏻
Please help me share the word and make it more popular :)

[@a_maxed_out_handle_of_30_chars]

simple and to the point, thank you :)

[@BriefVid]

Thank you for the nice comment! I am glad you liked it!

[@Hossein13M]

I can not belive how simple and awesome you explained these concepts! Thanks a lot

[@BriefVid]

Thank you for your kind reply 🙏🏻
Please help me share these videos with more people :)

[@shashanksathish9362]

That is amazing! concise and crisp, would love to see more of these.

[@BriefVid]

Thanks a lot for your kind reply @Shashank! Please help me spread the word by sharing these videos with more people 🙏🏻 I will indeed post more in this series very soon!

[@rasikaraja1840]

Bro just destroyed my 3 years ignorance. Great explanation.

[@BriefVid]

Thank you :) I am glad it could help!

[@kuncorokuncoro1130]

This is cool explanation! Can't wait to see next video.

[@BriefVid]

Thanks! It will be published soon

[@kamilgoabek3146]

Just WOW.. best ever git explanation ❤️👍

[@BriefVid]

Thank you so much Kamil! I appreciate it! 😀

[@lucasassuncaodeabreu3718]

This is Amazing!!
I was lost searching for "internal git tutorials" on web, and your videos are covering everything i was looking for!
Keep going!

[@BriefVid]

Thanks so much for your kind reply Lucas! I will do my best to post more :)

[@BriefVid]

@Luncas, I have posted the next video in the series here - th-cam.com/video/52MFjdGH20o/w-d-xo.html
I hope you will find it useful

[@brettgattinger3338]

Awesome Tutorial! Really succinctly summarizes the inner workings of Git. This is really useful since I have to automate a bunch of git stuff with GitPython and while their tutorials is great they don't really explain any of this stuff. So thank you!

[@BriefVid]

Thanks Brett! Your comment made me happy :)

[@hsaidinsan6345]

And i am watching the video i wad looking for, for the entire day at 00:00 just before i decided to give up and go sleep
What to say! thanks man you saved me 👍

[@BriefVid]

Thank you Hamza!

[@BriefVid]

I have posted the next video in the series here - th-cam.com/video/52MFjdGH20o/w-d-xo.html
I hope you will find it useful

[@evgeniizaitsev7886]

I agree that it is an amazing video and the way you explain the material is really cool. Please, go on.

[@BriefVid]

Thank you so much for this kind feedback! 🙏🏻

[@viniciusgoncalves8208]

Awesome content Brief! Thank you a lot man, please continue.

[@BriefVid]

Thanks, will do! If there are specific topics you'd like me to cover, please let me know!

[@jubjubfriend64]

You legend, so clear and really well animated!

[@BriefVid]

Thank you very much so the kind words 🙏🏻

[@eduardoestevakremer5248]

Thnaks !! Great content and pretty well presented: neat, concise, and to-the-point...

[@BriefVid]

Glad you enjoyed it And thank you! These comments really make my day and motivate me to create more content :)

[@user-is2yx2xd9f]

omg I immediately understand the git objects thank you!

[@BriefVid]

Thank you for your kind reply!

[@teamjupeter9451]

Wonderful, Thank you, Omer.

[@BriefVid]

Thank you Team!

[@ankurtoshniwal11]

Quick, well animated and conceptually explained

[@BriefVid]

Thank you very much!

[@thanhtruc4117]

Best explanation. Thank you so much

[@BriefVid]

You are welcome! Thank you for your kind comment 🙏🏻

[@naren2talk]

this is easily the best possible explnation out there,,,

[@BriefVid]

Thank you so much!

[@renatoaraujo6108]

Thanks you! I have been searching hard to understand this, and now I got! :)

[@BriefVid]

Glad it helped @Renato! Please help me spread the word 🙏🏻

[@AleksandrZhuravlev-tu3to]

Awesome work dude! Thanks a lot!

[@BriefVid]

Glad you liked it, and thank you for commenting!

[@TheSmilesClub]

Awesome intro!

[@BriefVid]

Thanks @Ilan Godik! I will post the next videos soon

[@person64389]

Love the Les Miserables reference.

[@BriefVid]

Nice catch River! I was wondering when someone would notice it 😉

[@emirhajric6314]

Such an underrated channel, awesome content 🙌

[@BriefVid]

Thank you very much! Please spread the word so more people get to enjoy it :)

[@SuperNovaRider]

Amazing video, totally under-viewed! 😀

[@BriefVid]

Thanks so much! Please help me share it 🙏🏻

[@shinauri1]

I love this series

[@BriefVid]

Thank you for your kind words!

[@samirergaibi874]

Awesome video! Made me want to check out more of your content, you got yourself a new subscriber! Keep up the good work👍

[@BriefVid]

Thank you Samir! I will do my best to add more content soon :)

[@subhankarhotta7094]

Well explained man! kept it brief and simple. Keep up the good work :)

[@BriefVid]

Thanks a lot for this kind feedback Subhankar! I appreciate it 🙏🏻

[@subhankarhotta7094]

@@BriefVid Why aren't you uploading more content like this?

[@Maximum_Dev]

I just subscribed, This is great! Keep up the good work!

[@BriefVid]

Thank you so much Ryan! Will do :)

[@guru_bro]

I cannot thank u enough u r a angel?

[@BriefVid]

Thank you so much for your kind words :) Not an angel, but I'm happy you found it useful! Let me know if you have any questions

[@yusun5722]

Best explanation on Git internals.

[@BriefVid]

Thanks a lot for your kind reply @Yu Sun! Please help me spread the word by sharing these videos with more people 🙏🏻

[@yusun5722]

@@BriefVid Definitely.

[@thejordan701]

Very clear ! Thanks Omer !

[@BriefVid]

Thanks Jordan, I'm glad you liked it!

[@it-series-music]

Awesome explanation and apt animation!

[@BriefVid]

Thank you very much!

[@whonayem01]

Excellent! Thank you!

[@BriefVid]

Glad you enjoyed it! Thank you for your nice comment :) Please subscribe to this channel 🙏🏻

[@i_m_veer_singh]

Very well explain! Well done! Keep it up!

[@BriefVid]

Thanks a lot Parmveer!

[@mercerkace2023]

Awesome explanation

[@BriefVid]

Thank you so much!

[@Foredres]

This awesome, really thanks for this video!
New sub and hello from Bogota!

[@BriefVid]

Thank you Andrés! It's great to have you as a subscriber :)

[@alialwerfally6497]

thank you so much that was amazingly clear

[@BriefVid]

Thank you for the kind comment!

[@akumpum]

Excellent tutorial

[@BriefVid]

Thank you! Please share it with more people 🙏🏻

[@randomsde4390]

Great content!

[@BriefVid]

Thank you!

[@viveksaroj3215]

thank you very much, you cleared my confusion

[@BriefVid]

Thanks for letting me know Vivek!

[@davisnoah347]

Life saver my man.

[@BriefVid]

Thank you Noah!

[@mrk19933]

Awesome fantastic excellent ... 🤩

[@BriefVid]

Thank you so much 😀

[@anandtyagi22]

Superb video

[@BriefVid]

Thank you so much 😀

[@BIGSCHOCK]

Just Amzing !!!

[@BriefVid]

Thank you 🙏🏻🙏🏻

[@tanchienhao]

Awesome!!

[@BriefVid]

Thanks a lot!

[@johnathanjames2872]

Nice explanation.

[@BriefVid]

Thank you Johnathan!

[@visserman365]

Super clear, thank you very much

[@BriefVid]

Thank you Jean!

[@BriefVid]

I have posted the next video in the series here - th-cam.com/video/52MFjdGH20o/w-d-xo.html
I hope you will find it useful

[@katdareshruti]

Simply Amazing !!!!!!!

[@BriefVid]

Thanks a lot!

[@existouf9738]

Amazing

[@BriefVid]

Thank you!

[@hjvanderlinden]

Thanks!

[@hasanmirarabshahi1956]

Nice video

[@BriefVid]

Thank you!

[@maximmandrik6103]

Super!

[@BriefVid]

Thank you! Cheers!

[@samewen]

Stellar

[@BriefVid]

Thank you! 🙏🏻

[@nikitaaniskoff762]

Cool!

[@BriefVid]

Thank you Nikita! Please share :)

[@habibdeleonbanos8196]

Awsome!

[@BriefVid]

Thank you!

[@BriefVid]

I have posted the next video in the series here - th-cam.com/video/52MFjdGH20o/w-d-xo.html
I hope you will find it useful

[@srijankumarsamanta5579]

So the file 1.txt will be saved in new blob ?
If in a file of say 1000 line of codes.. if I make a single line change will that mean it will create a new blob of all the 1000 lines code ?

[@BriefVid]

Hi Srijan,
Yes - it indeed means that. Git will create an entire new blob in this case.
There are optimizatoins however - specifically, git's Packfile. You can read about it here: git-scm.com/book/en/v2/Git-Internals-Packfiles
In addition, I have posted the next video in the series here - th-cam.com/video/52MFjdGH20o/w-d-xo.html
I hope you will find it useful

[@srijankumarsamanta5579]

@@BriefVid thanks

[@williamstubler6660]

Was the hash 24601 intentional? If not then there’s something fitting about French TH-camr coming up with it :)

[@BriefVid]

Nice catch William :) Indeed it was intentional, I am a Les Miserables fan, though I'm not French 😇

[@realB12]

Just curious: What kind of tools have you used to create this vid? Or is it really all by hand? So clear? so smooth?

[@BriefVid]

Thank you Rene. I used VideoScribe, and for some videos I use my Wacom pad as well.

[@danielsears1522]

Excellent tutorial. But are you correct when you say a commit object contains the hash for "one or more parent commits"? I prefer to think of a commit object as an element in a linked list where each commit object contains a single hash for its parent commit (unless its the initial commit). So to find the grandparent commit you would need to look at the parent commit.

[@BriefVid]

Hello Daniel and thank you for your comment and question.
A commit object may contain pointers to more than one commit. It is not the case of a "grandparent" commit as you called it, but for example - a merge commit which has two parents (almost always) as I described in the video about Git merge:
th-cam.com/video/ZS4stBVdDII/w-d-xo.html
It can also have more than two (direct) parent commits, but it's extremely rare.
I hope this clarifies things. If not, please feel free to ask 🙏🏻

[@danielsears1522]

@@BriefVid Thanks! I have some more studying to do. And people say that git is complicated...

[@BriefVid]

@@danielsears1522 No problem, let me know if you have other questions 🙏🏻🙏🏻

[@x86debug]

dawg why is it in light mode 😭

[@BriefVid]

Well it's a whiteboard :) the CLI is in dark mode

[@rogeliovillacorajr-rmvjcha8653]

how about tags? please create a video about tags.

[@BriefVid]

Hi Rogelio, thanks for your question!
It actually makes sense to refer to tags in a video, but the concept is too short to dedicate a full video for them - as tags are just named reference to a commit, and that reference doesn't (automatically) change with additional commits.
That is, let's say we have a branch `my_branch` which points to `commit_1`. Now we make another commit `commit_2` which points to `commit_1`, so `git` will automatially update `my_branch` to point to `commit_2`.
On the other hand, if we use `git tag my_tag` to create a tag pointing to `commit_1`, then it will still point to `commit_1` even if we introduce additional commits.
I hope that makes sense :)

[@larissamartins9441]

Thanks!!!

[@BriefVid]

Thanks for commenting!