TODO:
- `make tinderbox` running on universe15a.freebsd.org
```
$ openssl version
OpenSSL 3.0.15 3 Sep 2024 (Library: OpenSSL 3.0.15 3 Sep 2024)
$ python
Python 3.11.9 (main, Aug 1 2024, 01:28:14) [Clang 18.1.6 (https://github.com/llvm/llvm-project.git llvmorg-18.1.6-0-g1118c2 on freebsd15
Type "help", "copyright", "credits" or "license" for more information.
>>> import requests
>>> resp = requests.get("https://freebsd.org")
>>> resp.raise_for_status()
>>> resp.text[:250]
>>> exit()
$ fetch -o FreeBSD-14.1-RELEASE-amd64-bootonly.iso.xz https://ftp.freebsd.org/pub/FreeBSD/releases/ISO-IMAGES/14.1/FreeBSD-14.1-RELEASE-amd64-bootonly.iso.xz
FreeBSD-14.1-RELEASE-amd64-bootonly.iso.xz 94 MB 35 MBps 03s
$ fetch -qo /dev/stdout https://ftp.freebsd.org/pub/FreeBSD/releases/ISO-IMAGES/14.1/CHECKSUM.SHA256-FreeBSD-14.1-RELEASE-amd64 | grep bootonly.iso.xz
SHA256 (FreeBSD-14.1-RELEASE-amd64-bootonly.iso.xz) = 964fc8ea02198be6ecef959a573f121729791b60ec556482487c121cd13f5126
$ sha256 FreeBSD-14.1-RELEASE-amd64-bootonly.iso.xz
SHA256 (FreeBSD-14.1-RELEASE-amd64-bootonly.iso.xz) = 964fc8ea02198be6ecef959a573f121729791b60ec556482487c121cd13f5126
$ openssl sha256 FreeBSD-14.1-RELEASE-amd64-bootonly.iso.xz
SHA2-256(FreeBSD-14.1-RELEASE-amd64-bootonly.iso.xz)= 964fc8ea02198be6ecef959a573f121729791b60ec556482487c121cd13f5126
```