librarian

Use this skill when the user points you to a remote git repository (GitHub/GitLab/Bitbucket URLs, `git@...`, or `owner/repo` shorthand). The goal is to keep a reusable local checkout that is: - **stable** (predictable path) - **up to date** (periodic fetch + fast-forward when safe) - **efficient** (partial clone with `--filter=blob:none`, no repeated full clones) ## Cache location Repositories are stored at: `~/.cache/checkouts/<host>/<org>/<repo>` Example: `github.com/mitsuhiko/minijinja` → `~/.cache/checkouts/github.com/mitsuhiko/minijinja` ## Command ```bash bash checkout.sh <repo> --path-only ``` Examples: ```bash bash checkout.sh mitsuhiko/minijinja --path-only bash checkout.sh github.com/mitsuhiko/minijinja --path-only bash checkout.sh https://github.com/mitsuhiko/minijinja --path-only ``` The script will: 1. Parse the repo reference into host/org/repo. 2. Clone if missing. 3. Reuse existing checkout if present. 4. Fetch from `origin` when stale (default interval: 300s). 5. Attempt a fast-forward merge if the checkout is clean and has an upstream. ## Update strategy - Default behavior is **throttled refresh** (every 5 minutes) to avoid unnecessary network calls. - Force immediate refresh with: ```bash bash checkout.sh <repo> --force-update --path-only ``` ## Recommended workflow 1. Resolve repository path via `checkout.sh --path-only`. 2. Use that path for searching, reading, and analysis. 3. On later references to the same repo, call `checkout.sh` again; it will find and update the cached checkout. ## If edits are needed Prefer not to edit directly in the shared cache. Create a separate worktree or copy from the cached checkout for task-specific modifications. ## Notes - `owner/repo` defaults to `github.com`.