how to use two bare repositories?

Hi,

I have the following problem:

We use a public repository, a bare repository A, used with push and pull via ssh. A is only to be used by the core developer group.

Now I want to create another public repository B, from which anonymous pull is possible via http. So B should be another bare repository.

The problem is now that it seems not to be possible to update B:

1. pulling from A is not possible since B is bare;
2. fetching from A seems to work, checking the content of
   B via gitk seems to indicate that B has been updated
 --- however pulling from B doesn't work: The newly
 fetched changes are not transported to a repository
 which pulls from B ???

Hope somebody can shed light on this behaviour.

Thanks!

Oliver