command-sync-fork

A Claude Code slash command for syncing forked repositories with upstream changes.

Installation

# Clone to your preferred location
git clone git@github.com:claude-commands/command-sync-fork.git <clone-path>/command-sync-fork

# Symlink (use full path to cloned repo)
ln -s <clone-path>/command-sync-fork/sync-fork.md ~/.claude/commands/sync-fork.md

Usage

/sync-fork                  # Sync default branch with upstream
/sync-fork --rebase         # Rebase local changes on upstream
/sync-fork --all            # Sync all tracking branches
/sync-fork --dry-run        # Show what would be synced
/sync-fork develop          # Sync specific branch

What it does

1. Detects upstream remote (adds if missing)
2. Fetches upstream changes
3. Analyzes divergence between fork and upstream
4. Merges or rebases onto local branch
5. Pushes updated branch to origin

Output Format

Fork Sync Complete

Branch: main
Strategy: Merge
Commits Added: 15

Changes from Upstream:
| Category | Files | Lines       |
| -------- | ----- | ----------- |
| Added    | 3     | +450        |
| Modified | 12    | +234 / -156 |

Pushed to: origin/main

Sync Strategies

Strategy	Use Case
Merge	Preserve commit history (default)
Rebase	Linear history, rewrites commits
Reset	Match upstream exactly (destructive)

Options

Option	Description
--rebase	Rebase instead of merge
--merge	Merge upstream (default)
--all	Sync all tracking branches
--dry-run	Preview without changes
--force	Force push after sync

Requirements

• Git
• GitHub CLI (gh) for fork detection
• Claude Code with Opus 4.5 model access

Updates

cd <clone-path>/command-sync-fork && git pull