$ sudo apt-get update
$ sudo apt-get install pinentry-x2go 

pinentry-x2go is installed in your system.

Make ensure the pinentry-x2go package were installed using the commands given below,

$ sudo dpkg-query -l | grep pinentry-x2go *

You will get with pinentry-x2go package name, version, architecture and description in a table

pinentry-x2go package basic information: