[BUG] Claude Code on the Web: Git LFS not supported — proxy rejects LFS batch API with "invalid git path"

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report (please file separate reports for different bugs)
• [x] I am using the latest version of Claude Code

What's Wrong?

Git LFS still doesn't work in Claude Code Web. This bug was reported before and closed claiming it was fixed, but it was not: https://github.com/anthropics/claude-code/issues/57687

Repositories that use Git LFS cannot pull LFS-tracked files
in Claude Code web sessions. The local GitHub proxy
(127.0.0.1) actively rejects the LFS batch API endpoint,
so all LFS-tracked files remain as pointer stubs throughout
the session.

The proxy seems to have a path validation check that
only allows standard git smart HTTP protocol paths. It
rejects the /info/lfs/objects/batch URL pattern with the
error Proxy error: invalid git path.

What Should Happen?

The GitHub proxy should pass through Git LFS batch API
requests (/info/lfs/objects/batch) to GitHub, allowing
git lfs pull to download LFS objects. Repositories using
Git LFS should be fully functional in web sessions.

Error Messages/Logs

Steps to Reproduce

$ curl -s -o /dev/null -w "%{http_code}" -X POST
http://127.0.0.1/://.git/info/lfs/objects/batch
502

1. Create a repository that uses Git LFS (e.g. tracking .pdf or .pkl files via .gitattributes)
2. Start a Claude Code web session on that repository
3. Run git lfs install && git lfs pull
4. Observe: 502 error with "invalid git path"
5. The LFS-tracked files remain as ~130-byte text pointer stubs instead of actual binary content

Claude Model

None

Is this a regression?

No, this never worked

Last Working Version

_No response_

Claude Code Version

Claude Code Web

Platform

Anthropic API

Operating System

Ubuntu/Debian Linux

Terminal/Shell

Non-interactive/CI environment

Additional Information

@omid-ant here's a new bug for tracking since you closed the other one.

cc @aunitt @JJC1138 @mikewirth @cvdub @ezheidtmann @hakon-j-d-johnsen