fix: recreate GITHUB_WORKSPACE if it was a subfolder of mount path

action.yml

@@ -80,10 +80,6 @@ runs:
             BUILD_MOUNT_PATH="${GITHUB_WORKSPACE}"
           fi
 
-          # ensure mount path exists
-          mdkir -p "${BUILD_MOUNT_PATH}"
-          find "${BUILD_MOUNT_PATH}" -maxdepth 0 ! -empty -exec echo 'WARNING: directory [{}] is not empty, data loss might occur.' \;
-
           echo "Arguments:"
           echo
           echo "  Root reserve:      ${{ inputs.root-reserve-mb }} MiB"
@@ -111,6 +107,10 @@ runs:
           fi
           echo
 
+          # ensure mount path exists
+          mkdir -p "${BUILD_MOUNT_PATH}"
+          find "${BUILD_MOUNT_PATH}" -maxdepth 0 ! -empty -exec echo 'WARNING: directory [{}] is not empty, data loss might occur.' \;
+
           echo "Removing unwanted software... "
           if [[ ${{ inputs.remove-dotnet }} == 'true' ]]; then
             sudo rm -rf /usr/share/dotnet
@@ -179,6 +179,9 @@ runs:
           sudo chown -R runner "${BUILD_MOUNT_PATH}"
           sudo chgrp -R runner "${BUILD_MOUNT_PATH}"
 
+          # if build mount path is a parent of $GITHUB_WORKSPACE, recreate it
+          sudo mkdir -p "${GITHUB_WORKSPACE}"
+
     - name: Disk space report after modification
       shell: bash
       run: |