I can't install it, it says this

root@user:~# wget https://raw.githubusercontent.com/hestiacp/hestiacp/release/install/hst-install.sh
–2025-04-18 11:25:11-- https://raw.githubusercontent.com/hestiacp/hestiacp/release/install/hst-install.sh
Resolving raw.githubusercontent.com (raw.githubusercontent.com)… 2606:50c0:8003::154, 2606:50c0:8000::154, 2606:50c0:8001::154, …
Connecting to raw.githubusercontent.com (raw.githubusercontent.com)|2606:50c0:8003::154|:443…

what does that have to do with anything?

That is very normal. It connects to official hestiacp github to retrieve the scripts it needs to run to install the control panel.
Can you explain more, and provide details of what error you are getting?

Is Git unstable?

I tried to open the site through curl and there was given html code, that is all normal should be as I understand it

but for some reason it can’t, it says that the waiting time has expired.

Connecting to raw.githubusercontent.com (raw.githubusercontent.com)|2606:50c0:8003::154|:443… failed: Connection timed out.
Connecting to raw.githubusercontent.com (raw.githubusercontent.com)|2606:50c0:8001::154|:443… failed: Connection timed out.

Include -4 in the wget command

it is trying to connect over ipv6

Yes, tech support removed ipv6 and everything worked.