Failed to connect to repository : Command "git ls-remote -h git@github.comcast.com:username/sidtest.git HEAD"

Question

Im trying to setup Github connection from Jenkins but get the above error.

Inorder to overcome this error, I tried changing to Jenkins user and run the git ls-remote command.

su -s /bin/bash jenkins

but when I run the command I get the following error -

bash-4.1$ git ls-remote -h git@github.comcast.com:username/sid.git HEAD
fatal: Cannot change to '/home/clduser/..': Permission denied