title: Firebase: Still old version after deploy to hosting, how?
body: <p>I have received for maintenance a rather primitive react app hosted on firebase (developed by someone else). Now weird things are happening:</p>
  <ul>
  <li>I change content of a file (even simple text change)</li>
  <li>Run deploy (hosting) - I see in firebase console that deploy was successful</li>
  <li>Still: page content is still old, without changes!</li>
  </ul>
  <p>How can it be? I use Chrome incognito mode to ensure no cache on browser side, and Firebase docs say that deployment clear server cache.</p>