Как выйти из mirrorlist при установке arch с сохранением?(

How do I exit mirrorlist when installing arch with saving?(

If I understand you correctly, you should use the following guide:
[console]sudo pacman -Syy[/console]
After that use the following command:
[console]sudo nano /etc/pacman.d/mirrorlist[/console]
More with screnshots:
How to Update the Pacman Databases on Arch Linux