Fix rate limiting

retrieve

@@ -31,7 +31,7 @@ def fetch(session, url, **kwargs):
 	now = time.time()
 	if session.__JAADockerHubScriptLastReqTime > now - 0.5:
 		time.sleep(now + 0.5 - session.__JAADockerHubScriptLastReqTime)
-	session.__JAADockerHubScriptLastReqTime = now
+	session.__JAADockerHubScriptLastReqTime = time.time()
 	log(f'Fetching {url}')
 	r = session.get(url, **kwargs)
 	if not r or r.status_code != 200: