$ sudo pkg install go
Updating FreeBSD repository catalogue...
Fetching meta.txz: 100% 916 B 0.9kB/s 00:01
Fetching packagesite.txz: 100% 6 MiB 195.6kB/s 00:33
Processing entries: 63%
pkg: wrong architecture: FreeBSD:12.0:amd64 instead of FreeBSD:12:amd64
pkg: repository FreeBSD contains packages with wrong ABI: FreeBSD:12.0:amd64
Processing entries: 100%
Unable to update repository FreeBSD
Error updating repositories!
$ sudo pkg install go
Updating FreeBSD repository catalogue...
FreeBSD repository is up to date.
All repositories are up to date.
The following 1 package(s) will be affected (of 0 checked):
Installed packages to be UPGRADED:
go: 1.13.5,1 -> 1.13.7,1
Number of packages to be upgraded: 1
75 MiB to be downloaded.
Proceed with this action? [y/N]: y
pkg: http://pkg.FreeBSD.org/FreeBSD:12:amd64/latest/All/go-1.13.7,1.txz: Not Found