Fedora: Git cloning Problem (Github) in proxy connection

Today after installing Fedora Scientific, I decided to master Unix type OS and then Git (which I wanted to learn for the last couple of years but had no time). I'm accessing Internet through our college connection which needs proxy to be configured. So, I configured the proxy on Fedora and then Firefox to access this awesome book Pro Git. 

Then as per the author said I tried to clone this project from GitHub and ended up with an error message. I already had this kind of proxy related mess on Ruby on Rails in Windows, but here in Fedora! I don't know? I first thought. But it was frickin easy to rectify this proxy problem (after a few minutes googling) as I executed this command,

prior to executing the

Problem solved. Connection was established and cloning was successful.