[gnome-love] jhbuild: forcing fresh checkouts

[DON RAIKES oracle com]

Hi,

Is there a way to force jhbuild to do a fresh checkout of modules other than, of course, removing the 
checkout directory structure?

I keep running into situations where modules have been checked out, but they are corrupt so my jhbuild job 
finishes unsuccessfully, but simply pulling a fresh copy of a module corrects the problem.