The package golang-sslmate-src-go-pkcs12 0.0~git20210415.c5206de-2 has been added to kali-rolling. It has been imported from Debian: https://tracker.debian.org/pkg/golang-sslmate-src-go-pkcs12 -- More information about golang-sslmate-src-go-pkcs12: http://pkg.kali.org/pkg/golang-sslmate-src-go-pkcs12