Skill: Syncing a Branch

When to Use This Skill

Use this skill for sync requests: "sync my branch", "pull latest", "sync with remote", "update my branch", "get latest from origin/upstream".

Use other skills for: rebasing (rebasing-branch), creating PRs (creating-pull-request), viewing remotes (git commands).

Workflow Description

Updates branch with remote changes, auto-detecting fork vs origin scenarios.

Extract from user request: target branch (if specified, else current)

---

Phase 1: Branch Identification and Checkout

Objective: Determine which branch to sync and switch to it if needed.

Steps:

1. Determine target branch from user request:

   • Check for specific branch (e.g., "sync main", "sync the develop branch")
   • IF branch specified: use specified branch
   • IF not specified: get current branch to use as default

2. Checkout target branch if specified and different from current:

   git checkout <target-branch>
   

Validation Gate: IF checkout fails:

• Analyze error:
  • "error: pathspec '...' did not match": Branch doesn't exist
  • "error: Your local changes": Dirty working tree (will be caught by Phase 2)
  • Other: Permission issues
• Explain error
• Propose solution:
  • Doesn't exist: "Create branch first or verify name"
  • Permission: "Check repository access"
• Wait for user to resolve

Continue to Phase 2.

---

Phase 2: Execute Sync (Optimized)

Objective: Perform fork-aware branch synchronization in a single atomic operation.

Plan Mode: Auto-enforced read-only if active

Steps:

1. Run ../../scripts/sync-branch.sh (optionally pass target-branch parameter if user specified a branch in Phase 1, otherwise omit to sync current branch)

2. Parse the JSON response and handle results:

IF success: false:

Handle error based on error_type:

• not_git_repo:

  • STOP: "Not in a git repository"
  • Display: message and suggested_action from response
  • EXIT workflow

• branch_not_found:

  • STOP: "Branch not found"
  • Display: message and suggested_action from response
  • Explain: The branch may not exist locally
  • EXIT workflow

• uncommitted_changes:

  • Display: message from response
  • List files from uncommitted_files array
  • INFORM: "Uncommitted changes detected - creating commit first"
  • INVOKE: creating-commit skill
  • WAIT for creating-commit to complete

  IF creating-commit succeeded: RE-RUN Phase 2 (sync again after commit) Continue to Phase 3

  IF creating-commit failed: STOP immediately EXPLAIN: "Cannot sync without committing changes" EXIT workflow

• sync_conflict:

  • STOP: "Conflict encountered during sync"
  • Display: message and suggested_action from response
  • EXPLAIN: "Conflicts must be resolved manually"
  • EXIT workflow

• branch_diverged:

  • STOP: "Local branch has diverged from remote"
  • Display: message from response
  • EXPLAIN: "Cannot fast-forward merge - branch histories have diverged"
  • PROPOSE: "Use rebase to reconcile changes (rebasing-branch skill)"
  • EXIT workflow

• repo_type_detection_failed:

  • STOP: "Could not detect repository type"
  • Display: message and suggested_action from response
  • EXIT workflow

• Other errors:

  • STOP: Display error details
  • EXIT workflow

IF success: true:

Extract sync results:

{
  "success": true,
  "branch": "main",
  "is_fork": true,
  "operations_performed": [
    "fetched_all",
    "rebased_on_upstream",
    "pushed_to_origin"
  ],
  "commits_pulled": 3,
  "status": "up_to_date"
}

Continue to Phase 3.

---

Phase 3: Report Results

Objective: Confirm sync completed successfully with standardized output.

Steps:

1. Format status message based on sync results:

   • Use branch, commits_pulled, and status from Phase 2 response
   • Determine repository type from is_fork flag
   • List operations from operations_performed array

2. Report using standardized template:

   ✓ Branch Synced Successfully
   
   **Branch:** <branch> \
   **Repository Type:** <Fork|Origin-only> \
   **Commits Pulled:** <commits_pulled> \
   **Status:** <status description> \
   **Operations:** <operations_performed as list>
   

   Status descriptions:

   • up_to_date: "Branch is in sync with remote"
   • no_upstream: "No upstream tracking branch configured"
   • upstream_missing_branch: "Upstream doesn't have this branch"
   • push_failed: "Rebased on upstream but push to origin failed"
   • sync_conflict: "Encountered conflicts during sync"

Workflow complete.