Patch the JetToolbox in install.sh

Reported by paconnor.

install.sh

@@ -27,7 +27,11 @@ cd $CMSSW_BASE/src
 [ ! -d Core ] && git clone https://gitlab.cern.ch/cms-analysis/general/DasAnalysisSystem/Core.git
 
 # And JetToolbox
-[ ! -d JMEAnalysis/JetToolbox ] && git clone https://github.com/cms-jet/JetToolbox.git JMEAnalysis/JetToolbox -b jetToolbox_120X
+[ ! -d JMEAnalysis/JetToolbox ] && (
+    git clone https://github.com/cms-jet/JetToolbox.git JMEAnalysis/JetToolbox -b jetToolbox_120X
+    cd JMEAnalysis/JetToolbox
+    patch -p1 <$BASE_DIR/jetToolbox_120X.patch
+)
 
 # Set up scram tools in CMSSW -- must be done after fetching Core
 cd $CMSSW_BASE