diff --git a/scripts/upstreamMerge.sh b/scripts/upstreamMerge.sh
index 6d9541970d..a54b7c10eb 100755
--- a/scripts/upstreamMerge.sh
+++ b/scripts/upstreamMerge.sh
@@ -9,7 +9,7 @@ gitcmd="git -c commit.gpgsign=false"
 
 function update {
     cd "$workdir/$1"
-    $gitcmd fetch && $gitcmd reset --hard origin/master
+    $gitcmd fetch && $gitcmd clean -fd && $gitcmd reset --hard origin/master
     cd ../
     $gitcmd add $1
 }