We need to pull after fetch, if we're working on trunk
diff --git a/docker/build-rpms.sh b/docker/build-rpms.sh
index 06ba980..80a94e0 100755
--- a/docker/build-rpms.sh
+++ b/docker/build-rpms.sh
@@ -10,6 +10,7 @@
 
 cd $CASSANDRA_DIR
 git fetch
+git pull
 # clear and refetch tags to account for re-tagging a new sha
 git tag -d $(git tag) > /dev/null
 git fetch --tags > /dev/null 2>&1