This page summarizes the basic git commands to work with CMSSW

• Generating SSH Keys: https://help.github.com/articles/generating-ssh-keys (skip the xclip part and directly open the id_rsa.pub with the editor)
• Initialize in your working directory (or in your home) an empty git repository:

git init
git config --global user.name "your name as in github"
git config --global user.email "your email"
git config --global core.editor "your favorite editor (ex. emacs)"
#check your settings
git config --list

• Check out git-cmssw commands in your home:

git clone git@github.com:fwyzard/cms-git-tools.git
#add this line to your ~.cshrc
export PATH=$PWD/cms-git-tools:$PATH

• Setup a CMSSW area

scram p CMSSW_X_X_X
cd CMSSW_X_X_X/src
cmsenv
git cms-init

• To check out a package simply do

git cms-addpkg "Package"