make-do-not-allow-git-submodule-update.sh

#!/usr/bin/env bash

nogitdir="/tmp/nogitsubmodulesfrommake"
mkdir -p "$nogitdir"
git="$(which git)"
{ cat <<EOF
#!/usr/bin/env bash
if [ "\$1" = "submodule" ]; then
	echo "*** INSANITY: someone is messing with git submodules in a Makefile"
	echo "***           not running this command:"
	echo "***"
	echo "***           git \$*"
	echo "***"
	sleep 2
else
	"$git" \$*
fi
EOF
} > "$nogitdir/git"
chmod +x "$nogitdir/git"
PATH="$nogitdir:$PATH" make "$*"