The title of this bug may be incorrect. Ideally, there would be no perceptible lag at all. If there has to be lag, showing it in the page would be a bit better, but it's still going to cause problems:
* bugs won't be linked straight away
* merge proposals won't be update straight away
* per comment 7, people won't be able to pull the branch over http straight away
That said it may still be most pragmatic to show a message. Doing so would at least make people aware that there can be a lag.
The title of this bug may be incorrect. Ideally, there would be no perceptible lag at all. If there has to be lag, showing it in the page would be a bit better, but it's still going to cause problems:
* bugs won't be linked straight away
* merge proposals won't be update straight away
* per comment 7, people won't be able to pull the branch over http straight away
That said it may still be most pragmatic to show a message. Doing so would at least make people aware that there can be a lag.