fixup! ci: also run the Windows test suite with BusyBox' ash

Author: dscho

.github/workflows/main.yml

@@ -155,7 +155,7 @@ jobs:
       run: |
         curl -fLo /mingw64/bin/ash.exe \
           https://github.com/git-for-windows/git-sdk-64/raw/c7bf8b60df36106efa91fc0f68034bcef4896bfb/mingw64/libexec/busybox/ash.exe &&
-        ash="$(cygpath -aw /mingw64/bin/ash.exe)" &&
+        ash="$(cygpath -am /mingw64/bin/ash.exe)" &&
         echo "GIT_TEST_SHELL_PATH=$ash" >>$GITHUB_ENV &&
         echo "SHELL=$ash" >>$GITHUB_ENV &&
         echo "SHELL_PATH=$ash" >>$GITHUB_ENV &&