diff --git a/.github/actions/clean-disk/action.yml b/.github/actions/clean-disk/action.yml
index 9973109..2790311 100644
--- a/.github/actions/clean-disk/action.yml
+++ b/.github/actions/clean-disk/action.yml
@@ -41,12 +41,14 @@ runs:
               $(non_manifest_packages) # > /dev/null
           fi
 
-          GLOBIGNORE="/usr/share/git-core/**/*"
-          sudo rm -rf \
-            /var/lib/docker/ \
-            "$AGENT_TOOLSDIRECTORY" \
-            /opt \
-            /usr/{local,share}/** &
+          (
+            GLOBIGNORE="/usr/share/git-core/**/*";
+            sudo rm -rf \
+              /var/lib/docker/ \
+              "$AGENT_TOOLSDIRECTORY" \
+              /opt \
+              /usr/{local,share}/** 
+          ) &
           # {
           #   sudo swapoff -a
           #   sudo rm -f /mnt/swapfile