Aura PHP项目托管在github上，前天在google groups上看到邮件，说auraphp的基本类库已经就绪，开始使用aura.system装备所有包了。于是按照教程使用git命令下载aura.system。

$ git clone https://github.com/auraphp/system
Cloning into system...
error: error setting certificate verify locations:
  CAfile: /bin/curl-ca-bundle.crt
  CApath: none
 while accessing https://github.com/auraphp/system/info/refs

fatal: HTTP request failed

提示错误，额。。。我的环境是Win 7+MSYS Git，但是可以使用git方式下载源码：

$ git clone git://github.com/auraphp/system.git

没办法，第一次用github，所以又回到groups中提问，得到@Lee 的回复：

Are you on windows?
If so try this (you may need to change the path to curl-ca-bundle.crt):
git config —system http.sslcainfo "C:\Program Files (x86)\git\bin\curl-ca-bundle.crt"

事实证明，Ta是对的。。。

ROY@ROY-PC ~
$ git config --system http.sslcainfo "C:\MinGW\msys\1.0\bin\curl-ca-bundle.crt"

ROY@ROY-PC ~
$ git clone https://github.com/auraphp/system
Cloning into system...
remote: Counting objects: 577, done.
remote: Compressing objects: 100% (253/253), done.
remote: Total 577 (delta 323), reused 498 (delta 293)
Receiving objects: 100% (577/577), 398.26 KiB | 4 KiB/s, done.
Resolving deltas: 100% (323/323), done.