`serializes FETCH_HEAD callers before they enter admission` assumed that two same-repo fetches join the FETCH_HEAD lock lane in call order. They do not. `runWithGitFetchHeadLock` first `await`s `fetchLockPath`, which walks the filesystem (`realpath`, `stat` per parent directory, `readFile` of `commondir`, `realpath` again) before it calls `runWithGitOperationLock`, and the lane is registered only after that walk resolves. For a non-existent `/repo` that is five libuv threadpool round-trips per caller. Two callers issued back to back run their chains concurrently, so lane order is threadpool completion order, not call order. When the `interactive` fetch won that race it entered the lane ahead of the `background` fetch. On the first caller's release it reached admission immediately and, being interactive, took the free network headroom slot instead of queueing, while the background fetch stayed parked on the lock. `queued` therefore settled at 0 and never reached the asserted 1. Measured inversion rate for the bare lock-path walk was 54/500 on an idle machine; the test itself failed 5/20 locally, always at the same assertion, matching the two CI failures on unrelated PRs (#17530, #17630) at the same line. Fix the premise rather than the symptom: stub only the key derivation, keeping the real FIFO `runWithGitOperationLock` that the test actually exercises, so the lane is registered synchronously with the call. Key derivation keeps its own coverage in `src/shared/git-fetch-head-lock.test.ts`. This also stops the fetch tests in this file from sharing one global `/.git/FETCH_HEAD` lane with each other and from touching the real filesystem. Verified deterministic: 40/40, then 30/30 clean runs, plus 25/25 with twelve CPU hogs and a concurrent `src/main/git/command-runner/` run saturating the box.
Orca
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The AI Orchestrator for 100x builders.
Run Codex, ClaudeCode, OpenCode or Pi side-by-side — each in its own worktree, tracked in one place.
Download Orca
Features
Also in the box:
- Quick open — Search across worktrees, files, agents, commands, and repo context without leaving your flow.
- Account switcher & usage tracking — See Claude and Codex usage and rate-limit resets, and hot-swap accounts without re-logging in.
- Rich repo previews — Preview Markdown, images, PDFs, and repo docs in the workspace.
- Computer Use — Let agents operate desktop apps and visible UI when a workflow needs real interaction.
- Notifications and unread state — Know when an agent finishes or needs attention, then mark threads unread to come back later.
- And many, many more — we ship daily, so this list is perpetually behind. The changelog is the real feature list.
Supported Agents
Works with any CLI agent — if it runs in a terminal, it runs in Orca.
Claude Code
Codex
Grok
Cursor
GitHub Copilot
OpenCode
MiMo Code
Amp
OpenClaude
Antigravity
Pi
oh-my-pi
Hermes Agent
Devin
Goose
Auggie
Autohand Code
Charm
Cline
Codebuff
Command Code
Continue
Droid
Kilocode
Kimi
Kiro
Mistral Vibe
Qwen Code
Rovo Dev
+ any CLI agent
Install
Desktop — macOS, Windows, Linux
- Download from onOrca.dev
- Or grab a build directly: macOS Apple Silicon · macOS Intel · Windows (.exe) · Linux AppImage · All builds
- Running
orca serveon a headless Linux server? See the headless Linux server guide.
Or via a package manager:
# macOS (Homebrew)
brew install --cask stablyai/orca/orca
# Arch Linux (AUR) — or stably-orca-git to build from source
yay -S stably-orca-bin
Mobile Companion — iOS, Android
Pair with your desktop app to monitor and steer your agents from your phone.
- iOS: Download on the App Store or join TestFlight
- Android: Download APK 0.0.46 · Install guide
Community & Support
-
Discord: Join the community on Discord.
-
Twitter / X: Follow @orca_build for updates and announcements.
-
WeChat: Scan to join the Orca community WeChat group 7. If it is full, use group 8.
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Feedback & Ideas: We ship fast. Missing something? Request a new feature.
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Privacy: See the privacy & telemetry docs for what anonymous usage data Orca collects and how to opt out.
-
Show Support: Star this repo to follow along with our daily ships.
Developing
Want to contribute or run locally? See our CONTRIBUTING.md guide.
Signed Builds
Windows code signing sponored/provided by SignPath.io, certificate by SignPath Foundation.
License
Orca is free and open source under the MIT License.












