title: Why does go get fail with "invalid version: unknown revision"?
body: <p>I published an update to a Go module, bumping the version to v1.1.0. I created a tag named <code>v1.1.0</code> and pushed the tag to GitHub.</p>
  <p><a href="https://github.com/depp/bytesize/releases/tag/v1.1.0" rel="noreferrer">https://github.com/depp/bytesize/releases/tag/v1.1.0</a></p>
  <p>However, I cannot use this package in my other projects. I get an error that says, &quot;invalid version: unknown revision v1.1.0&quot;. I don't know why the revision is &quot;unknown&quot;, since it's tagged.</p>
  <pre><code>$ go get github.com/depp/bytesize@v1.1.0                    
  go: downloading github.com/depp/bytesize v1.1.0
  go get github.com/depp/bytesize@v1.1.0: github.com/depp/bytesize@v1.1.0: verifying module: github.com/depp/bytesize@v1.1.0: reading https://sum.golang.org/lookup/github.com/depp/bytesize@v1.1.0: 410 Gone
      server response: not found: github.com/depp/bytesize@v1.1.0: invalid version: unknown revision v1.1.0
  [Exit: 1]
  </code></pre>