Comment 1 for bug 177855

Older versions of Bazaar allowed "bzr pull" to add nodes to the tip of your revision history, without renormalizing it. So if you had:

A
|\
B C
| |
D |
|/
E

A branch at E could have rh=A,B,D,E rn=4, or rh=A,C,E,rn=3

After about 0.8, we changed it so that 'pull' would always generate A,B,D,E

In 1.0 we changed 'pull' so that instead of doing:
  target.set_revision_history(source.get_revision_history())
To doing:
  target.set_last_revision_info(source.get_last_revision_info())

For <= dirstate branches (Branch5), set_last_revision_info regenerates the revision history from the repository. It then checks that the revno is correct. And as you notice, there is a mismatch.

Branch6 doesn't do the rebuild and check, (because it scales with O(history)).

So what we need is just an update to check/reconcile to fix this, and turn the error into a warning that you should run 'reconcile' on the source branch.