Update sha comparison

Author: jvanderhoof

Jenkinsfile

@@ -69,7 +69,8 @@ pipeline {
             git fetch -q
 
             # note when tag not found git rev-parse will just print its name
-            TAG=`git rev-parse tags/v$VERSION 2>/dev/null || :`
+            # TAG=`git rev-parse tags/v$VERSION 2>/dev/null || :`
+            TAG=`git rev-list -n 1 "v$VERSION 2>/dev/null || :`
             echo Tag v$VERSION: $TAG
 
             HEAD=`git rev-parse HEAD`
@@ -85,7 +86,7 @@ pipeline {
         sh 'docker run -i --rm -v $PWD:/src -w /src alpine/git clean -fxd'
 
         sh './publish.sh'
-        
+
         // Clean up again...
         sh 'docker run -i --rm -v $PWD:/src -w /src alpine/git clean -fxd'
         deleteDir()