Function runGitCheckout

cli/flow/main.go:4354–4463

(ctx *snap.Context)

}

func runGitCheckout(ctx *snap.Context) error {
	if ctx.NArgs() > 1 {
		fmt.Fprintf(ctx.Stderr(), "Usage: %s gitCheckout [branch-or-url]\n", commandName)
		return fmt.Errorf("expected at most 1 argument, got %d", ctx.NArgs())
	}

	var (
		branchInput string
		err         error
	)

	if ctx.NArgs() == 1 {
		branchInput = strings.TrimSpace(ctx.Arg(0))
	} else {
		branchInput, err = promptLine(ctx, "Branch name or GitHub tree URL: ")
		if err != nil {
			return fmt.Errorf("read branch input: %w", err)
		}
	}

	if branchInput = strings.TrimSpace(branchInput); branchInput == "" {
		fmt.Fprintf(ctx.Stderr(), "Usage: %s gitCheckout [branch-or-url]\n", commandName)
		return fmt.Errorf("branch reference cannot be empty")
	}

	if err := ensureGitRepository(); err != nil {
		return err
	}

	remotes, err := listGitRemotes()
	if err != nil {
		return err
	}

	var (
		branchName           string
		preferredRemote      string
		branchCandidates     []string
		branchDerivedFromURL bool
	)

	if strings.HasPrefix(branchInput, "http://") || strings.HasPrefix(branchInput, "https://") {
		candidates, err := parseGitHubTreeURL(branchInput)
		if err != nil {
			return fmt.Errorf("parse GitHub tree URL: %w", err)
		}
		branchCandidates = candidates
		branchName = branchCandidates[0]
		branchDerivedFromURL = true
	} else {
		branchName = branchInput
		branchCandidates = []string{branchName}

		if idx := strings.Index(branchInput, "/"); idx > 0 {
			candidateRemote := branchInput[:idx]
			remaining := branchInput[idx+1:]
			if remaining != "" {
				for _, r := range remotes {