When repairing a stale polecat worktree, start from origin/<default-branch>
instead of the bare repo's HEAD. This ensures repaired polecats have the
latest fetched commits rather than potentially stale code.
- Add WorktreeAddFromRef to git package for creating worktrees from a ref
- RepairWorktreeWithOptions now uses origin/<default-branch> as start point
- Respects rig's configured default branch (main, master, etc.)
Based on PR #112 by markov-kernel. Test changes from that PR can be
submitted separately.
Closes#101🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: markov-kernel <markov-kernel@users.noreply.github.com>
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