This bug prevents us to mirror several internal and external debian
repositories. We've repos created with reprepro that only contains
binary-amd64. There's no binary-all packages files and they're also not
listed in the (In)Release files.
With the introduction of forcing the retrieval of binary-all Packages in
#904927 and commit e994bb6
(https://salsa.debian.org/debian/debmirror/-/commit/e994bb67ebbf08b194310261e23d8106a4271a96)
the debmirror call always fails.
This change should be better controlled via a commandline option
(something like --include-all) instead of adding 'all' by default and
then fail during the execution.
For us we had to revert the changes introduced in the commit named above
and set the package to "hold". Hopefully someone will take a look into
it.