from cognite.client.data_classes.hosted_extractors import EventHubSourceUpdate
source = EventHubSourceUpdate('my_event_hub').event_hub_name.set("My Updated EventHub")
res = client.hosted_extractors.sources.update(source)

{
  "items": [
    {
      "type": "mqtt3",
      "externalId": "my.known.id",
      "host": "<string>",
      "createdTime": 1730204346000,
      "lastUpdatedTime": 1730204346000,
      "port": 1883,
      "authentication": {
        "type": "basic",
        "username": "<string>"
      },
      "useTls": true,
      "caCertificate": {
        "thumbprint": "<string>",
        "expiresAt": 123
      },
      "authCertificate": {
        "thumbprint": "<string>",
        "expiresAt": 123
      }
    }
  ]
}