попробуй
if cat /etc/apt/sources.list | grep -E "deb Index of /kali kali-rolling main contrib non-free" || cat /etc/apt/sources.list | grep -E "deb Index of /kali kali-rolling main non-free contrib"; then echo -e "\n\nРепозитории в порядке"; else echo -e "\n\nПроблемы с репозиториями"; fi

если проблемы то
echo -e "deb Index of /kali kali-rolling main non-free contrib" > /etc/apt/sources.list
мне помогло