in src/audit-license-headers.js [105:111]
await fetch(RAT_URL)
.then((resp) => resp.body.pipeThrough(unzip))
.then((stream) => Readable.fromWeb(stream))
.then((stream) => pipeline(stream, tar.extract(cohoRoot)))
.catch(err => {
throw new Error('Failed to get RAT JAR:\n' + err.message);
});