on trunk but on various other versions I've tried.

<pre>
User ID	 	Capabilities	 	Contact Info
anonymous	   	ghmncz	   	Anon
blackdog	   	gv	   	blackdog
</pre>

but

<pre>
 fossil clone test
                Bytes      Cards  Artifacts     Deltas
Send:              49          1          0          0
Received:         120          2          0          0
Send:             625         25          0          0
password for blackdog:
Error: login failed
</pre>

You should use