ERROR: Error cloning remote repo 'origin'

you can set Git location in Jenkins server/node configuration:

goto Configure, under section Node Properties mark checkbox Tools Location and set yours path to Git.

Check that you did specify the git executable in your Jenkins Git plugin configuration:

C:\Users\m.kothamasu\GI doesn't look like an exe.

That would be similar to JENKINS-6181 (which was about perforce, but the idea remains the same).

Check also JENKINS-12353, to make sure <git/bin> is in your PATH.