[skip ci] workflow test

Author: chihosin

.github/workflows/build-board-custom.yml

@@ -53,6 +53,7 @@ jobs:
     steps:
     - name: Set up repository
       run: |
+        rm -rf ~/runner/_work/circuitpython/circuitpython
         git clone --filter=tree:0 https://github.com/adafruit/circuitpython.git $GITHUB_WORKSPACE
     - name: Checkout head / tag
       env: