Claude Code can git init in home directory, causing 300GB+ storage bloat

Bug

Claude Code initialized a git repository in my home directory (~). Over multiple sessions, it committed files, causing .git/objects to grow to 247 GB as it tracked every file under ~ (caches, binaries, node_modules, project files, etc.).

Additionally, Kilo (an internal Claude Code component) snapshotted the .git directory, adding another 61 GB in ~/.local/share/kilo/snapshot/.

Total wasted storage: ~308 GB, all reported by macOS as "System Data."

How it likely happened

1. Started a Claude Code session with ~ as the working directory
2. Asked Claude to do something involving git
3. Claude ran git init in ~ without checking that it was the home directory
4. Subsequent sessions saw ~ as a valid git repo and kept committing/tracking files
5. Kilo snapshotted the bloated .git directory, duplicating the problem

The repo had 99 commits and 247 GB in .git/objects.

Expected behavior

Claude Code should refuse to run git init in $HOME (or other system-level directories like /, /tmp, /usr, etc.) and warn the user instead.

Environment

• macOS (Darwin 25.3.0)
• Claude Code CLI

Workaround

rm -rf ~/.git
rm -rf ~/.local/share/kilo

This immediately reclaimed ~308 GB.