Function fetch

@commitlint/travis-cli/src/cli.ts:70–73

({ name, url }: { name: string; url: string })

}

async function fetch({ name, url }: { name: string; url: string }) {
	await git(["remote", "add", name, url]);
	await git(["fetch", name, "--quiet"]);
}

async function isClean() {
	const result = await git(["status", "--porcelain"], {