One command to open git repo in another branch

gitworktree.sh

# Add this in your .zshrc/.bashrc

gt() {
  if [ -z "$1" ]; then
    echo "Usage: gt <branch_name>"
    return 1
  fi

  branch="$1"
  repo_root=$(git rev-parse --show-toplevel 2>/dev/null)

  if [ -z "$repo_root" ]; then
    echo "❌ Not inside a git repository."
    return 1
  fi

  worktree_dir="${repo_root}-${branch}"

  # Check if worktree already exists
  if [ -d "$worktree_dir" ]; then
    echo "✅ Worktree for '$branch' already exists: $worktree_dir"
  else
    # Try to add the branch
    if git show-ref --verify --quiet "refs/heads/$branch"; then
      echo "🌱 Adding existing branch '$branch' as worktree..."
      git worktree add "$worktree_dir" "$branch"
    else
      echo "✨ Branch '$branch' does not exist, creating..."
      git worktree add -b "$branch" "$worktree_dir"
    fi
  fi

  # Open in VS Code
  code "$worktree_dir"
}