Is it possible to get a server jar for a broken version of forge?

[idiot_shinuki]

The installer I want to use is broken and I need the server jar from it, is there a way to manually download the server jar?

[idiot_shinuki]

Is there a way to fix broken installers manually?

[idiot_shinuki]

forge-1.12.2-14.23.5.2846

I really need it for my modpack because some mods just haven't updated yet
I'll update to the latest version when every mod I have on it has updated, sorry that I keep bothering you about this.