func getRevs()

in cmd/git-sync/main.go [1024:1046]

• 17 lines of code
• 4 McCabe index (conditional complexity)

func getRevs(ctx context.Context, localDir, branch, rev string) (string, string, error) {
	// Ask git what the exact hash is for rev.
	local, err := localHashForRev(ctx, rev, localDir)
	if err != nil {
		return "", "", err
	}

	// Build a ref string, depending on whether the user asked to track HEAD or a tag.
	ref := ""
	if rev == "HEAD" {
		ref = "refs/heads/" + branch
	} else {
		ref = "refs/tags/" + rev
	}

	// Figure out what hash the remote resolves ref to.
	remote, err := remoteHashForRef(ctx, ref, localDir)
	if err != nil {
		return "", "", err
	}

	return local, remote, nil
}