The arrow at this picture is incorrect. Since we use

~~~
$ hg pull
pulling from https://bitbucket.org/vlad/planets
~~~

it should be something like

~~~
+--------------------+--------------------+--------------------+
| /home/vlad/planets | /tmp/planets       | /somewhere/planets |
+--------------------+--------------------+--------------------+
            |                                         |
            +--------<--------------------<-----------+
~~~