Fix jgit version to one that is found in Maven Central

build.moxie

@@ -107,7 +107,7 @@ properties: {
   slf4j.version  : 1.7.12
   wicket.version : 1.4.22
   lucene.version : 5.5.2
-  jgit.version   : 4.6.1.201703071140-r.123-g5094c1a5c
+  jgit.version   : 4.6.1.201703071140-r
   groovy.version : 2.4.4
   bouncycastle.version : 1.52
   selenium.version : 2.28.0