"Bzr for Emacs Devs" including upstream branches

[Adrian Robert]

Hi,

I was wondering if there is any equivalent to the excellent documents at:

http://www.emacswiki.org/emacs/BzrQuickStartForEmacsDevs
http://www.emacswiki.org/emacs/BzrForEmacsDevs

that talks a little bit about dealing with UPSTREAM branches?  A few words 
about the ins and outs of maintaining multiple branches locally, strategies for 
bandwidth minimization (if needed), copying / merging from one to the other, 
etc. would be good, but especially I'm looking for the equivalent of "svn ls" 
that lets you look at what branches are published at a site.

After some hunting around I tried:

bzr branches sftp://address@hidden/srv/bzr/emacs/

but this just started downloading something at 1K / second and never got 
anywhere.  The launchpad loggerhead mirror just seems to show the trunk.

thanks,
Adrian