Title says all. I tried the debian version then retried with git (linux3 branch).
I pushed a change to fix an issue with get_ver() function and 3.x kernels (which could cause some problems), but kernel.org has some mirroring problems right now too, and it's likely that it's due to that (for example, without the --no-gpg flag, ketchup will try to find the .bz2.sign signature, which is not yet available for 3.0.2 at kernel.org and will fail -- although we should probably fix that too). Is this the error you're getting?
Btw, kernel.org keep changing the URLs (for the -rc releases for example), and it's likely that 3.0-rcs will work, while 3.1-rcs won't, or vice versa.
Tested your last hour fix and yes it fixes the problem.