pkg-static: packagesite URL error after source upgrade from 14-stable to 15-stable

Hi,

After a source upgrade from 14-stable to 15-stable on amd64, installing
compat14x and rebuilding poudriere-devel, then creating a builder,
hte builder works fine except the following scrolls up when it starts:

Updating FreeBSD repository catalogue...
pkg-static: packagesite URL error for pkg+http://pkg.FreeBSD.org/FreeBSD:15:amd64/latest/meta.conf -- pkg+:// implies
  SRV mirror type
   pkg-static: packagesite URL error for pkg+http://pkg.FreeBSD.org/FreeBSD:15:amd64/latest/meta.txz -- pkg+:// implies
    SRV mirror type                               

... etc etc. I'm at a loss how to resolve this. poudriere otherwise works fine.
It doesn't matter if it's http or https.

The site resolves ok, it works:

wget http://pkg.FreeBSD.org/FreeBSD:15:amd64/latest/data.tzst
--2025-12-12 12:14:47--  http://pkg.freebsd.org/FreeBSD:15:amd64/latest/data.tzst
Resolving pkg.freebsd.org (pkg.freebsd.org)... 85.30.190.140, 2a02:80:0:3ffd::50:2
Connecting to pkg.freebsd.org (pkg.freebsd.org)|85.30.190.140|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 11019767 (11M) [application/octet-stream]
Saving to: ‘data.tzst’

data.tzst                   100%[==============================================>]  10.51M  10.2MB/s    in 1.0s    

2025-12-12 12:14:48 (10.2 MB/s) - ‘data.tzst’ saved [11019767/11019767]

obv. I can't url test with pkg+ that's a pkg thing

relevant bits of poudriere.conf

=====
FREEBSD_HOST=https://download.FreeBSD.org
#
GIT_BASEURL=git.freebsd.org/src.git
GIT_PORTSURL=git.freebsd.org/ports.git
#
PACKAGE_FETCH_BRANCH=latest
PACKAGE_FETCH_URL=pkg+http://pkg.FreeBSD.org/\${ABI}
=====

% pkg -v
2.4.2

% pkg info pkg | ug Version
      3: Version        : 2.4.2_1

/etc/pkg/FreeBSD.conf in case it's relevant

=====
FreeBSD-ports: {
   url: "pkg+https://pkg.FreeBSD.org/${ABI}/latest",
   mirror_type: "srv",
   signature_type: "fingerprints",
   fingerprints: "/usr/share/keys/pkg",
   enabled: yes
}
FreeBSD-ports-kmods: {
   url: "pkg+https://pkg.FreeBSD.org/${ABI}/kmods_latest",
   mirror_type: "srv",
   signature_type: "fingerprints",
   fingerprints: "/usr/share/keys/pkg",
   enabled: yes
}


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