step 1

wget https://www.kernel.org/pub/software/scm/git/git-2.14.2.tar.gz

step 2

tar -xzf git-2.14.2.tar.gz

step 3 install dependenty

yum install gettext
yum install curl-devel
yum install perl-devel
yum install zlib-devel

step 4 compile

cd git-2.14.2 & ./configure & make && make install