Unable to checkout Linux Kernel from Git

Hello,

I am configuring a Kernel on Arrow SoCkit Evaluation board with Cyclone V SoC (5CSXFC6D631C6N)

I was following the Embedded Linux Beginners guide as provide in Rocketboards.

Now, I am unable to checkout ‘rel_socfpga-4.1_15.09.01_pr’ from Altera SoCfpga repository.

Does anybody have a source for that file? Or any alternate release that I can use.

Thanks for your help.