I quite like @jamill's

```
<summary>
Specifies the tag-following behavior of the fetch operation.
<para>
If not set, the fetch operation will follow the default behavior for the remote
based on the remote's configuration.
</para>
</summary>
```

Would adding to this something like the following make sense?

```
If neither this property nor the remote `tagopt` configuration is set,
this will default to <see cref="TagFetchMode.Auto"/> (ie. tags that point to objects
retrieved during this fetch will be retrieved as well).