id: task-237 title: Fix invalid git ref 'origin/origin' during remote task loading status: Done assignee:

• '@codex' created_date: '2025-08-17 16:42' updated_date: '2025-08-26 20:28' labels:
• git
• bug
• remote dependencies: [] priority: high

Description

While running backlog browser, a warning can appear:

Skipping branch origin: Error: Git command failed (exit code 128): git ls-tree -r --name-only -z origin/origin -- backlog/tasks

Root cause (likely): our remote task indexing builds refs as origin/${branch} (see buildRemoteTaskIndex). If branch is already origin/<name> (or an invalid entry like origin/origin/HEAD), we end up with an invalid ref (e.g., origin/origin, origin/origin/HEAD).

Fix scope:

• Sanitize branch inputs accepted by the remote indexer to a single canonical form: origin/<branch>
• Accept and normalize: main, origin/main, refs/remotes/origin/main
• Filter out non-branch entries: bare origin, origin/HEAD, and HEAD
• Add tests for normalization and for skipping invalid entries
• Verify the warning disappears when running backlog browser.

Acceptance Criteria

• [x] #1 Normalize remote branch inputs to canonical ref: origin/, without double-prefix
• [x] #2 Filter out invalid refs: HEAD, origin, origin/HEAD; do not query Git for these
• [x] #3 Accept inputs in any of: main | origin/main | refs/remotes/origin/main and normalize identically
• [x] #4 Add tests for buildRemoteTaskIndex branch normalization and invalid-ref filtering
• [x] #5 Manual verification: run backlog browser; the previous warning does not appear anymore

Implementation Notes

Normalize remote branch inputs for remote task loading: accept 'main', 'origin/main', 'refs/remotes/origin/main' and map to canonical 'origin/'; filter invalid refs like 'origin', 'origin/HEAD', 'HEAD'. Added tests for normalization and invalid-ref filtering; verified no warnings when running browser.