looks like the issue is prior to patching but rather in the stage when trying to download linux sources ("could not checkout branch linux-3.8.y) - maybe there is some more info in "log.do_patch.29112?
Maybe you're behind a firewall .. and can't fully access the internet?
i have download linux sources manully。
using command： git clone --bare --mirror git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git
i am not sure there is a useful branch of linux-3,8,y,because log tells that no meta data branch found...
thanks for your reply