Git clone error

hi, everyone
who knows what’s reason of below error while git clone the kernel. I can git clone the repo from github without any problem.

git clone kernel/hikey-linaro - Git at Google
Cloning into ‘hikey-linaro’…
remote: Sending approximately 1.05 GiB …
remote: Counting objects: 4, done
remote: Total 5967200 (delta 5026550), reused 5967200 (delta 5026550)
Receiving objects: 100% (5967200/5967200), 1.04 GiB | 20.74 MiB/s, done.
error: RPC failed; curl 56 GnuTLS recv error (-110): The TLS connection was non-properly terminated.
Resolving deltas: 100% (5026550/5026550), done.

Works for me.
Maybe just try it again?

does hikey960 repo provide the git protocol? such as:
git clone git://xxx.

No (fill to 20 characters min).