$ sudo apt-get update
$ sudo apt-get install git-buildpackage-rpm 

git-buildpackage-rpm is installed in your system.

Make ensure the git-buildpackage-rpm package were installed using the commands given below,

$ sudo dpkg-query -l | grep git-buildpackage-rpm *

You will get with git-buildpackage-rpm package name, version, architecture and description in a table

git-buildpackage-rpm package basic information: