Why fetching latest kernel sources is failing?

cg-clone http://www.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git

gives me the following error:

progress: 2 objects, 921 bytes
error: File 2a7e338ec2fc6aac461a11fe8049799e65639166 (http://www.kernel.org/pub/
scm/linux/kernel/git/torvalds/linux-2.6.git/objects/2a/
7e338ec2fc6aac461a11fe8049799e65639166) corrupt

Cannot obtain needed blob 2a7e338ec2fc6aac461a11fe8049799e65639166
while processing commit 0000000000000000000000000000000000000000.
error: cannot map sha1 file 2a7e338ec2fc6aac461a11fe8049799e65639166
cg-pull: objects pull failed
cg-init: pull failed

What's happening now? On the other local tree (I had already checked out a tree) 
I get other kind of problems, so I can't use it either.