Fix guest VM git operations for worktrees and ownership mismatch#48
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Fix guest VM git operations for worktrees and ownership mismatch#48
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Three fixes for git operations failing inside the guest VM: 1. Change sanitized .git/config permissions from 0600 to 0644. The config contains no credentials (stripped by SanitizeConfig) but was unreadable by the guest UID due to ownership mismatch. 2. Always write ~/.gitconfig with [safe] directory = /workspace. Git 2.36+ rejects repos owned by a different UID (host 501 vs guest 1000) without this setting. The gitconfig is now written unconditionally, even without identity or token configured. 3. Create minimal git structure (HEAD, objects/, refs/) for worktree snapshots so git recognizes them as valid repositories. Detached HEADs fall back to a symbolic ref to avoid errors with empty objects/. The resolved gitdir is validated (must contain HEAD) to prevent path traversal, and HEAD content is filtered to require "ref: refs/" prefix. Known limitation: worktree snapshots show "No commits yet" because the object database lives in the main repo's .git/objects/ which is outside the workspace mount. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
JAORMX
approved these changes
Mar 17, 2026
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Summary
.git/configpermissions (0600→0644) so guest UID can read the sanitized config[safe] directory = /workspaceto guest~/.gitconfigunconditionally to prevent git 2.36+ "dubious ownership" errorsKnown limitation
Worktree snapshots show "No commits yet" because the object database lives in the main repo's
.git/objects/which is outside the workspace mount.Test plan
task fmt && task lint && task test— all passgit statusworks in VMgit statusworks (no errors), but shows no commits (known limitation)🤖 Generated with Claude Code