title: `gsutil cp` command throwing "OSError: The filename, directory name, or volume label syntax is incorrect"
body: <p>I've followed the <a href="https://cloud.google.com/storage/docs/gsutil_install" rel="noreferrer">gsutil install guide</a> following the Google Cloud instructions and I've <a href="https://cloud.google.com/sdk/gcloud/reference/components/update" rel="noreferrer">updated GCloud components</a> to the latest versions. I've just recently installed and configured GCloud to work with my credentials and project. First, I've used the following command to export a single collection I need from my <em>Firestore</em> :</p>
  <pre><code>gcloud firestore export gs://my-project-id.appspot.com --collection-ids=theCollectionINeed
  </code></pre>
  <p>Now I see this export is in my Firebase Console <em>Storage</em> section as a folder. Being the project <em>Owner</em>, I'd like to get this export into my local system. For that, I see I need to use <em>gsutil</em> to be able to copy it. Reading the instructions to <a href="https://cloud.google.com/storage/docs/quickstart-gsutil#download_the_object_from_your_bucket" rel="noreferrer">download the object from your bucket</a>, I've tried with the following command, but I got this error:</p>
  <pre><code>$ gsutil cp -r gs://m-project-id.appspot.com/2020-05-22T02:01:06_86154 .
  Copying gs://lucky-level-dev-6ac34.appspot.com/2020-05-22T02:01:06_86154/2020-05-22T02:01:06_86154.overall_export_metadata...
  OSError: The filename, directory name, or volume label syntax is incorrect.
  </code></pre>
  <p>I'm running this command using <code>cmd</code> in a Windows 10 environment.
  I'd like to be able to download this folder from the cloud to my local drive.</p>
  <h2>Update</h2>
  <p>After being, I tried to change the bucket folder (object prefix) as suggested:</p>
  <pre><code>gsutil mv gs://my-project-id.appspot.com/2020-05-22T02:01:06_86154 gs://my-project-id.appspot.com/2020-06-23_someFolder
  </code></pre>
  <p>But trying again now throws me a new error:</p>
  <pre><code>gsutil cp -r gs://my-project-id.appspot.com/2020-05-22_someFolder .
  Copying gs://my-project-id.appspot.com/2020-05-22_someFolder/2020-05-22T02:01:06_86154.overall_export_metadata...
  OSError: Invalid argument.9.0 B]
  </code></pre>
  <p>Surely I need to change the name of the file too?</p>