diff --git a/src/ci/scripts/install-mingw.sh b/src/ci/scripts/install-mingw.sh
index da8e1d55f3ae3..59da32b6cf312 100755
--- a/src/ci/scripts/install-mingw.sh
+++ b/src/ci/scripts/install-mingw.sh
@@ -66,5 +66,8 @@ if isWindows && isKnownToBeMingwBuild; then
             ;;
     esac
 
+    # Prevent adding /mingw64/bin Git for Windows to PATH
+    echo "MSYSTEM=" >> "$GITHUB_ENV"
+
     ciCommandAddPath "$(cygpath -m "$(pwd)/${mingw_dir}/bin")"
 fi