步骤：

    1、下载新版的git

    地址：/git/git/releases，选择 git-2.9.3.tar.gz，下载即可

    2、安装依赖包

    yum install curl-devel expat-devel gettext-devel openssl-devel zlib-devel

        3、解压，编译安装(root用户下)

        $ tar -zxf git-1.7.2.2.tar.gz 

    $ cd git-1.7.2.2 

    $ make prefix=/usr/local all 

    $ make prefix=/usr/local install

    4、安装后测试

    git clone git://git.kernel.org/pub/scm/git/git.git