Checksum failures fetching from xfce mirror (meta-xfce)

Hi,

I've noticed that xfce packages fail on do_fetch with checksum errors:

ERROR: xfce4-session-4.20.0-r0 do_fetch: Checksum failure fetching
http://archive.xfce.org/src/xfce/xfce4-session/4.20/xfce4-session-4.20.0.tar.bz2

Checking what's going on with bitbake xfce4-session -c do_fetch -v

     [0] Downloading 'http://archive.xfce.org/ ...
     HTTP response 301 Moved Permanently [http://archive.xfce.org/...]
     Adding URL: https://archive.xfce.org/...
     Adding URL: https://archive.xfce.org/
     [0] Downloading 'https://archive.xfce.org/src/xfce/xfce4-session/4.20/xfce4-session-4.20.0.tar.bz2' ...
     HTTP response 302  [https://archive.xfce.org/src/xfce/xfce4-session/4.20/xfce4-session-4.20.0.tar.bz2]
     Adding URL: https://archive.al-us.xfce.org/...
     Adding URL: https://mirror.slackbuilds.org/...
     [0] Downloading 'https://archive.al-us.xfce.org/...
     Saving '.../xfce4-session-4.20.0.tar.bz2.tmp'
     [1] Downloading 'https://mirror.slackbuilds.org//...
     Saving '.../xfce4-session-4.20.0.tar.bz2.tmp'

We see that the XFCE mirror gives us two redirects. Both are concatenated to the same file, hence the
checksum failures. We can reproduce the same behavior with `wget`:

     $ wget http://archive.xfce.org/src/xfce/xfce4-session/4.20/xfce4-session-4.20.0.tar.bz2
     ...
     Saving 'xfce4-session-4.20.0.tar.bz2'
     Saving 'xfce4-session-4.20.0.tar.bz2.1'

     $ wget -O xfce4-session-o.tar.bz2 http://archive.xfce.org/src/xfce/xfce4-session/4.20/xfce4-session-4.20.0.tar.bz2
     ...
     Saving 'xfce4-session-o.tar.bz2'
     Saving 'xfce4-session-o.tar.bz2'

     $ $ ls -lh xfce4-session-*
     -rw-r--r--. 1 mrnuke mrnuke 1.2M Dec 15  2024 xfce4-session-4.20.0.tar.bz2
     -rw-r--r--. 1 mrnuke mrnuke 1.2M Dec 15  2024 xfce4-session-4.20.0.tar.bz2.1
     -rw-r--r--. 1 mrnuke mrnuke 2.3M Dec 15  2024 xfce4-session-o.tar.bz2


The first `wget` call realized that this is two files. The '-O' argument causes the them to be concatenated. I wonder
if this is a bug in the wget fetcher, or if the XFCE mirror is doing something weird.

Either way, what is the correct way to resolve this?

Alex