No method of specifying update frequency
According to the documentation, agit updates known repositories quarter-hourly. It would be nice, to save bandwidth, if this frequency could be specified somehow. At the very least, it should be able to be disabled.
Specifying the frequency would be nice.
It is already possible to disable the syncing -this can be done under device settings, where all your 'accounts' (Google, twitter, etc -and 'Agit') can be found- find the Agit one, click it, and untick the single Agit account within. This slightly awkward arrangement is due to the conventions of Androids 'Accounts and Sync' infrastructure:
http://developer.android.com/training/sync-adapters/creating-authenticator.html