The package golang-github-spf13-cobra 0.0~git20161229.0.1dd5ff2-1 has been added to kali-rolling. It has been imported from Debian: https://tracker.debian.org/pkg/golang-github-spf13-cobra -- More information about golang-github-spf13-cobra: http://pkg.kali.org/pkg/golang-github-spf13-cobra