Fix rpm packaging bit-rot

Change-Id: Ia710b0773984891ee18c6c0558cc09b984043e38
Signed-off-by: Dave Barach <dave@barachs.net>
diff --git a/build-root/scripts/version b/build-root/scripts/version
index 9d236bc..bbafb9b 100755
--- a/build-root/scripts/version
+++ b/build-root/scripts/version
@@ -11,6 +11,7 @@
 
 if [ "$1" = "rpm-release" ]; then
   [ -z "${ADD}" ] && echo release && exit
+  CMT=$(git describe --dirty --match 'v*'| cut -s -d- -f3,4 | sed 's/-/_/')
   echo ${ADD}~${CMT}
   exit
 fi