centos7 默认的git版本是1.8.x
git --version git version 1.8.3.1
使用第三方仓库安装方式（IUS）
地址 https://ius.io/setup
yum install https://repo.ius.io/ius-release-el7.rpm https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm
若出现 不更新已安装的软件包提示，则需要卸载之前的源,再进行安装
yum remove epel-release.noarch yum remove ius-release.noarch
搜索git
yum search git
··· git.x86_64 : Fast Version Control System git222.x86_64 : Fast Version Control System git224.x86_64 : Fast Version Control System ···
安装并验证
# yum -y install git224 # git version git version 2.24.4
