GIT 疑惑

dreamer2038

請想教為何有些源碼無法下載,當發生無法下載的現象時應該如何克服?例如
這個
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root@ubuntu:~/CubieTruck# git clone git://github.com/cubieboard/linux-sunxi
Cloning into 'linux-sunxi'...
remote: Counting objects: 3313902, done.
remote: Compressing objects: 100% (560260/560260), done.
fatal: write error: ?????????520/3313902), 496.37 MiB | 541 KiB/s
fatal: index-pack failed
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及這個
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root@ubuntu:~/CubieTruck# git clone git://github.com/linux-sunxi/u-boot-sunxi.git
Cloning into 'u-boot-sunxi'...
/root/CubieTruck/u-boot-sunxi/.git/branches/: ?????????
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謝謝。