Pre-gc:
-r--r--r-- 1 compiler hackers 12080 2007-12-12 20:35 pack-f534c957f3ee7f3f1046dee0081fcc315d9698bb.idx
-r--r--r-- 1 compiler hackers 678643 2007-12-12 20:35 pack-f534c957f3ee7f3f1046dee0081fcc315d9698bb.pack
Post-gc:
-r--r--r-- 1 compiler hackers 20912 2007-12-12 20:36 pack-5145ce9770077cee99795fc21cfcc6ea30eb6d47.idx
-r--r--r-- 1 compiler hackers 1144055 2007-12-12 20:36 pack-5145ce9770077cee99795fc21cfcc6ea30eb6d47.pack
The fact that the index file has grown so much indicates that it's sucking in a bunch of
extra objects from the .keep pack, and you're seeing the duplication.
I'm not sure how that's happening, though. I thought the --local flag to git-pack-objects told
it not to do that.