# 1) Download official git autocompletion script:

curl https://raw.githubusercontent.com/git/git/master/contrib/completion/git-completion.bash -o ~/.git-completion.bash

​

# 2) Update execution permissions:

chmod u+x ~/.git-completion.bash

​

# 3) Update ~/.bash_profile with 'if file exists execute':

if [ -f ~/.git-completion.bash ]; then

  . ~/.git-completion.bash

fi

echo 'source ~/git-completion.bash' >> ~/.bashrc