git clone https://github.com/oneLeptonStopAt13TeV/StopAF.git
cd StopAF
git submodule init
git submodule update
cd common && git checkout master && git pull && cd ..
<here, make sure to have a ROOT sourced somewhere>
cd sonicScrewdriver && git checkout master && git pull && make clean lib && cd ..

# If this is the first time, you might want to change
# the CMSSW area where setup.sh goes to source root
source setup.sh