Error on git clone from official Git mirror on Windows

I am trying to clone the official llvm git repo on Windows:

git clone http://llvm.org/git/llvm.git

I get this error:

Cloning into ‘llvm’…
remote: Counting objects: 1069147, done.
remote: Compressing objects: 100% (255719/255719), done.
Receiving objects: 1% (10692/1069147), 3.37 MiB | 1.56 MiB/s
Receiving objects: 1% (15306/1069147), 5.38 MiB | 1.65 MiB/s
Receiving objects: 1% (21244/1069147), 7.39 MiB | 1.71 MiB/s
Receiving objects: 2% (21383/1069147), 7.39 MiB | 1.71 MiB/s
Receiving objects: 2% (27543/1069147), 9.43 MiB | 1.87 MiB/s
error: RPC failed; result=18, HTTP code = 200
fatal: The remote end hung up unexpectedly
fatal: early EOF
fatal: index-pack failed

Here is the solution according to stackoverflow.com but this requires access to the server:
http://stackoverflow.com/questions/17683295/git-bash-error-rpc-failed-result-18-htp-code-200b-1kib-s

Is anybody using the official git mirror on Windows successfully?

My antivirus was causing the problem. sorry for the noise.