1.更新相关依赖
yum remove -y git
yum install -y curl-devel expat-devel gettext-devel openssl-devel zlib-devel asciidoc
yum install -y gcc perl-ExtUtils-MakeMaker
2.安装git2.2.1
wget https://github.com/git/git/archive/v2.2.1.tar.gz
tar -zvxf v2.2.1
cd git-2.2.1
make configure
./configure --prefix=/usr/local/git --with-iconv=/usr/local/libiconv
make all doc
make install install-doc install-html
echo "export PATH=$PATH:/usr/local/git/bin" >> /etc/bashrc
source /etc/bashrc
3.测试是否更新成功
git --version
# 如出现(SSL connect error)
yum update -y nss curl libcurl openssh