Bug Description

As in the summary: trying to implement a smart git server works fine with small repos, but essentially locks up until it runs out of memory for a big git repo - I'm testing with the Linux kernel and a small handler library I put together (intended to be part of another project).

Obviously this is a big repo (hence a good use of a pathological use case) but it's not enormous - 8gb, even if read entirely into RAM, would fit on this machine.

go-git Version

v6.0.0-20251009132922-75a182125145

Steps to Reproduce

1. Clone the Linux kernel - git clone https://github.com/torvalds/linux.gt
2. Clone the test application git clone https://github.com/wrouesnel/go.git-http-handler
3. Serve the Linux kernel locally:

cd go.git-http-handler
go run ./cmd/git-server --base-dir ../linux.git 

4. Attempt a git clone from the local server in another window

git clone http://localhost:8080

This will just not complete.

Additional Information

No response