Problem with Fetch using Let's Encrypt Certificates on Arm?

[Russell Haley]

Hi,

I'm attempting to pull in a patch from the reviews board and I get the
following error:

freebsd at imx6:~ % fetch
https://reviews.freebsd.org/file/data/wa7jc7bpnhvjhm5espm7/PHID-FILE-6tz3dv32poii5fmqh5ve/D13690.diff
Certificate verification failed for /C=US/O=Let's Encrypt/CN=Let's Encrypt
Authority X3
539735016:error:14090086:SSL
routines:ssl3_get_server_certificate:certificate verify
failed:/usr/src/crypto/openssl/ssl/s3_clnt.c:1269:
fetch:
https://reviews.freebsd.org/file/data/wa7jc7bpnhvjhm5espm7/PHID-FILE-6tz3dv32poii5fmqh5ve/D13690.diff:
Authentication error
freebsd at imx6:~ %


The reviews url works fine with curl on Arm as well as working with fetch
on amd64 11.1. I tested on a BBB at 11.2 and a Hummingboard (IMX6) on
CURRENT.

freebsd at beaglebone:~ % uname -a
FreeBSD beaglebone 11.2-RELEASE FreeBSD 11.2-RELEASE #0 r335510: Fri Jun 22
02:27:16 UTC 2018
root at releng2.nyi.freebsd.org:/usr/obj/arm.armv6/usr/src/sys/BEAGLEBONE
arm

root at imx6:/home/freebsd # uname -a
FreeBSD imx6 12.0-CURRENT FreeBSD 12.0-CURRENT #0 r336134: Mon Jul  9
19:59:31 UTC 2018
root at releng3.nyi.freebsd.org:/usr/obj/usr/src/arm.armv7/sys/IMX6
arm


Thoughts?

Russ