Large git rep push error

[Marta Rossi]

Hello, I have a quite large rep to push to github using Sourcetree (about 13Gb - it's an Unreal Engine + Max/MSP project).
When I push the main I get those errors:

git -c diff.mnemonicprefix=false -c core.quotepath=false --no-optional-locks push -v --tags origin main:main
fatal: mmap failed: Invalid argument
fatal: the remote end hung up unexpectedly
send-pack: unexpected disconnect while reading sideband packet
fatal: the remote end hung up unexpectedly

For what I understand on github you can upload up to 15Gb, but I'd probably need LFS? First time using Sourcetree, so any advice greatly appreciated.

Thanks

[Martin Runge]

Hi @Marta Rossi

Welcome to the Atlassian Community!

Your 13GB push likely fails due to memory limits or network timeouts. Pushing a large initial commit over HTTPS causes a 'mmap failed' error when Git runs out of memory during packing. Using Git LFS is essential for your Unreal Engine and Max/MSP project.

GitHub's 100MB file limit makes storing large assets directly in Git problematic, bloating your repo and hurting performance.

I would set up Git LFS in your repository first by going to Repository > Git LFS > Initialize Repository in Sourcetree, then track your heavy asset formats like .uasset, .umap, or .fbx  before making any fresh commits.