diff --git a/.github/workflows/installMediaWiki.sh b/.github/workflows/installMediaWiki.sh
index bbb17782..a5a1f3e7 100644
--- a/.github/workflows/installMediaWiki.sh
+++ b/.github/workflows/installMediaWiki.sh
@@ -5,7 +5,7 @@ set -ex
 MW_BRANCH=$1
 EXTENSION_NAME=$2
 
-wget "https://github.com/wikimedia/mediawiki/archive/$MW_BRANCH.tar.gz" -nv
+wget "https://github.com/wikimedia/mediawiki/archive/refs/heads/$MW_BRANCH.tar.gz" -nv
 
 tar -zxf $MW_BRANCH.tar.gz
 mv mediawiki-$MW_BRANCH mediawiki