I have recently introduced a new Termux mirror that is hosted in Sydney, Australia. The repositories that are mirrored are termux-main, termux-main-21, termux-root & termux-x11.

Source list syntax

deb https://mirrors.wale.id.au/termux/termux-main stable main
deb https://mirrors.wale.id.au/termux/termux-root root stable
deb https://mirrors.wale.id.au/termux/termux-x11 x11 main