Update build.yml

.github/workflows/build.yml

@@ -396,6 +396,8 @@ jobs:
       - name: Install PyInstaller
         if: matrix.goal == 'build'
         run: |
+          tmpd=$(mktemp -d -t my-script)
+          cd $tmpd
           git clone https://github.com/pyinstaller/pyinstaller.git
           cd pyinstaller
           export latest_release=$(git tag --list | grep -v dev | grep -v rc | sort -Vr | head -n1)