Why is my .git file huge?

Question

I accidentally added and committed some very large (100MB+) PSD files in a git directory. I made a bunch of edits to those files while they were in the directory, but then realized they shouldn't be there and removed them from the directory.

I then ran:

git add --all && git commit -m "Removed large psds"

The files in my directory now add up to less than a dozen MB, except for the .git file itself however, which is 700MB+.

What is going on here? Is it retaining old versions of the removed .PSD files? Does that mean git doesn't ever clear out the space gained from deleting files? How do I have it forget about those files completely so that I can bring the .git file size back down?

Possible duplicate of stackoverflow.com/questions/1029969/… — Amir Afghani
– Amir Afghani, Commented Mar 28, 2013 at 23:39

Qix - MONICA WAS MISTREATED · Accepted Answer · 2016-08-24 01:07:59Z

15

Your .git folder is really big because the PSDs files are still present in the repository. To remove them, you need to modify the history using git filter-branch. Here explains how to use this command. After, you will need to clean the repository.

I created a script to help this job. If you want to use it, you can download it from github. Any comments are welcome.

edited Aug 24, 2016 at 1:07

Qix - MONICA WAS MISTREATED

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answered Mar 29, 2013 at 2:49

William Seiti Mizuta

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2 Comments

vonbrand Over a year ago

If it is just a single, recent commit, git rebase might be simpler to use.

Austin Over a year ago

This might be a stupid question, but after I run git-delete, how do I push the changes to .git? Tried add/commit/push and it said I needed to git pull, which just readds the files.

Roberto Tyley · Accepted Answer · 2013-04-16 20:09:33Z

You want to use the BFG Repo-Cleaner, a faster, simpler alternative to git-filter-branch designed for removing large files from Git repos.

Download the BFG jar (requires Java 6 or above) and run this command:

$ java -jar bfg.jar --strip-blobs-bigger-than 10MB my-repo.git

Any files over 10MB in size (that aren't in your latest commit) will be removed from your Git repository's history. You can then use git gc to clean away the dead data:

$ git gc --prune=now --aggressive

The BFG is typically 10-50x faster than running git-filter-branch and the options are tailored around these two common use-cases:

Removing Crazy Big Files
Removing Passwords, Credentials & other Private data

Full disclosure: I'm the author of the BFG Repo-Cleaner.

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