Update build-kernel.yml

.github/workflows/build-kernel.yml

@@ -267,10 +267,18 @@ jobs:
           if [[ $? -eq 0 ]]; then
               sudo mkdir -p ../build-kernel              
               cp cache/hash-beta/*.git* ../build-kernel/ 2> /dev/null || true
+              echo "FILE_HASH=$(ls -1 cache/hash-beta/*.githash | head -1)"  >> $GITHUB_ENV
           fi
           
           echo "FILE_NAME=${BRANCH}-${FAMILY}" >> $GITHUB_ENV
           echo "UPLOAD=true" >> $GITHUB_ENV
+          
+      - name: Upload hash
+        if: ${{ env.UPLOAD == 'true' }}
+        uses: actions/upload-artifact@v2
+        with:
+          name: hash
+          path: build/${{ env.FILE_HASH }}
 
       - name: Upload build artifacts