Git Pr

Git PR Skill

Repository Setup

Bare clones are cached so subsequent runs re-fetch instead of re-cloning. The cache lives under <workspace>/.repos/, where <workspace> is $GLYPH_WORKSPACE_DIR (glyph's task/session runtime contract — always set per-run). When the script is invoked manually outside a glyph run (e.g. local debugging), $GLYPH_WORKSPACE_DIR is unset and the cache falls back to ./.repos/ (cwd-relative); cd into the workspace root first.

# --- workspace + repos-dir resolver (paste once at the top of the playbook) ---
project_root() {
  # `GLYPH_WORKSPACE_DIR` is glyph's runtime contract — always set inside
  # a task/session. `pwd` is the manual-invocation fallback.
  echo "${GLYPH_WORKSPACE_DIR:-$(pwd)}"
}

repos_dir() {
  echo "$(project_root)/.repos"
}

# --- per-repo bare clone ---
REPO_NAME="<repo-name>"  # e.g. glyph
REPO_URL="<repo-url>"    # e.g. https://github.com/glyphs-ai/glyph
REPOS_ROOT="$(repos_dir)"
REPO_DIR="$REPOS_ROOT/$REPO_NAME"

# First time: clone. Subsequent: fetch.
# All bare-repo commands use `git --git-dir="$REPO_DIR"` instead of `cd "$REPO_DIR"`
# so they keep working under `safe.bareRepository=explicit` (a default in newer
# git installs that rejects `git` invocations whose cwd is inside a bare clone).
if [ -d "$REPO_DIR" ]; then
  git --git-dir="$REPO_DIR" fetch --all --prune
else
  mkdir -p "$REPOS_ROOT"
  git clone --bare "$REPO_URL" "$REPO_DIR"
  git --git-dir="$REPO_DIR" config remote.origin.fetch "+refs/heads/*:refs/remotes/origin/*"
  git --git-dir="$REPO_DIR" fetch --all --prune
fi

Anti-pattern: do NOT put the worktree inside the bare clone

The worktree path argument MUST be "$WORK_DIR/repo" — an absolute path written from the workDir. Two failure modes to avoid:

1. Relative path while cwd is inside the bare clone. Writing git worktree add -b "$BRANCH" repo origin/main after cd "$REPO_DIR" creates the worktree at <bare>/repo/, inside the bare clone:

   • ✅ git --git-dir="$REPO_DIR" worktree add -b "$BRANCH" "$WORK_DIR/repo" origin/main
   • ❌ cd "$REPO_DIR" && git worktree add -b "$BRANCH" repo origin/main

2. cd into the bare clone at all. Newer git installs ship with safe.bareRepository=explicit, which rejects every subsequent git command whose cwd is inside a bare repo (including the very git worktree add you were trying to run). Using git --git-dir="$REPO_DIR" … from the workDir avoids this entirely:

   • ✅ git --git-dir="$REPO_DIR" worktree add … "$WORK_DIR/repo" …
   • ❌ cd "$REPO_DIR"; git worktree add … "$WORK_DIR/repo" …

The wrong forms have three consequences: they pollute the shared .repos/ cache, they trip safe.bareRepository=explicit from any sibling directory, and the leaked files survive git worktree remove because they live inside the bare clone.

Worktree Workflow

Each run gets its own worktree — isolated branch, shared .git objects, millisecond creation.

Mode A: New Branch (default)

Use when starting a fresh PR from the default branch. Branch naming follows conventional commits with a descriptive slug (<type>/<slug>); the agent picks the slug based on what the PR is changing.

# Examples: chore/remove-deprecated-paths, feat/mcp-only-flag, fix/playwright-storage-path
BRANCH="<type>/<slug>"
WORK_DIR="$(pwd)"  # workDir

git --git-dir="$REPO_DIR" worktree add -b "$BRANCH" "$WORK_DIR/repo" origin/main
cd "$WORK_DIR/repo"
# ... make changes ...

Mode B: Resume Existing Branch

Use when the brief specifies an existing branch (e.g. fixing review comments on an open PR).

EXISTING_BRANCH="<branch-from-brief>"  # e.g. feat/mcp-only-flag
WORK_DIR="$(pwd)"

git --git-dir="$REPO_DIR" fetch origin
git --git-dir="$REPO_DIR" worktree add "$WORK_DIR/repo" "origin/$EXISTING_BRANCH"
cd "$WORK_DIR/repo"
git checkout -B "$EXISTING_BRANCH" "origin/$EXISTING_BRANCH"

# ... make changes, commit, push ...

How to decide: If the brief contains a branch name or PR reference with an existing branch, use Mode B. Otherwise use Mode A.

Mode C: Read-Only

Use when only reading repo code — no changes, no commits, no PR.

WORK_DIR="$(pwd)"

git --git-dir="$REPO_DIR" worktree add "$WORK_DIR/repo" origin/main --detach
cd "$WORK_DIR/repo"
# ... read files, grep, explore ...
# Do NOT commit or push.

# Cleanup at seal:
git --git-dir="$REPO_DIR" worktree remove "$WORK_DIR/repo" --force

How to decide: If the run only needs to read source code for analysis (no writes, no PR), use Mode C.

Worktree Cleanup

Mandatory at seal time. After push (Mode A/B) or after reading (Mode C), clean up. Agents using this skill must clean up in their playbook's seal/delivery phase.

git --git-dir="$REPO_DIR" worktree remove "$WORK_DIR/repo" --force

Commit & Push

git add -A
git commit -m "feat: description"
git push origin HEAD

Open PR

gh pr create --title "feat: ..." --body-file <utf8-file> --base main

GitHub PR review submission

Submit a structured review (verdict + inline comments) via the reviews API. Compose the body in a UTF-8 file and POST it with --input.

gh api repos/<owner>/<repo>/pulls/<number>/reviews \
  --method POST \
  --input <review-body.json>

Review-body JSON shape (universal across agents that submit GitHub reviews):

{
  "body": "Overall summary",
  "event": "APPROVE | REQUEST_CHANGES | COMMENT",
  "comments": [
    { "path": "packages/<pkg>/src/Foo.tsx", "line": 42, "body": "..." }
  ]
}

• body — the summary at the top of the review; may reference paths (playwright-evidence/login-mobile.png) or line anchors (HeaderActions.tsx:42).
• event — exactly one of APPROVE, REQUEST_CHANGES, COMMENT. COMMENT submits inline comments without a verdict.
• comments[] — zero or more inline comments; each must set path (repo-relative) and line (in the PR diff).

Platform notes

PowerShell encoding caveat for gh body flags

On Windows from PowerShell, always use --body-file <utf8-file> — never --body "<text>" — with any gh command that accepts a body: gh pr create, gh pr edit, gh pr review, gh issue create, gh issue edit. PowerShell's argument-string encoding mangles em-dashes, arrows, and section signs into multi-byte mojibake; --body-file reads the file as UTF-8 and round-trips cleanly. Compose the body into a UTF-8 file (heredoc on POSIX, Set-Content -Encoding utf8 on PowerShell) and pass its path.

Conventional Commits

Format: <type>: <description>

Types:

• feat: — New feature
• fix: — Bug fix
• refactor: — Code restructuring
• docs: — Documentation only
• test: — Tests
• chore: — Maintenance

PR Description Template

## What
Brief description of the change.

## Why
Context and motivation.

## Changes
- file1: description
- file2: description

## How to Test
Steps to verify.

Rules

• Never push directly to the default branch — always open a PR
• One logical change per commit
• PR title follows conventional commits
• Branch name is a descriptive <type>/<slug> — no fixed prefix; the slug describes the change (chore/remove-deprecated-paths, not op/<opaque-id>)
• Bare clone goes to the resolved repos dir ($(repos_dir)), never into the workDir directly
• Never cd into the bare clone. All bare-repo commands use git --git-dir="$REPO_DIR" …. See "Anti-pattern: do NOT put the worktree inside the bare clone" above.
• Worktree path is always "$WORK_DIR/repo" — absolute, written from the workDir; never a bare relative repo.
• Always clean up worktree at seal — do not leave orphaned worktrees