Index: Jenkinsfile
===================================================================
--- Jenkinsfile	(revision c2cec21d33557038d0d159c7ebe761abbe834dda)
+++ Jenkinsfile	(revision deb61854e9112abc24832595ace6a13c421ffd1e)
@@ -10,5 +10,8 @@
 	def log_needed = false
 
-	stage_name 		= ''
+	stage_name 	   = ''
+
+	gitRefOldValue = ''
+	gitRefNewValue = ''
 
 	builddir = pwd tmp: true