Is there a best-practice for fiddling with ReleaseBuilderForXdotY ?

I downloaded the latest trunk image so I could look at the recent background image issue and, after running ReleaseBuilderFor4dot5 class>>prepareNewBuild  discovered that it uses MCHttpRepository to upload to the source.squeak.org/trunk.

I was going to play around with MCFileBasedRepository to save locally, but decided to ask the list first.

Also, my apologies if I accidently clobbered /trunk

thx.

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