Under the hood
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The agent/tool proxy can now add extra git config includes and prepend a directory to PATH
What
When Claude Code builds the environment for its agent/tool proxy, it can now conditionally set GIT_CONFIG_COUNT and include.path entries to pull in extra git configuration, and it can prepend a computed directory to the PATH environment variable. This is in addition to the proxy's existing handling of GIT_CONFIG_GLOBAL and its gh command-line shim (set via CLAUDE_CODE_AGENT_PROXY_GH_SHIM).
Why
This gives the agent proxy more control over the git configuration and command lookup path seen by tools it runs, which is relevant to how git operations and the gh shim behave under the proxy.
Names in the bundleCLAUDE_CODE_AGENT_PROXY_GH_SHIM
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The finding does not say what triggers the new git include.path entries or what directory gets prepended to PATH.