mkosi: Disable add-determinism on Fedora

This was added for reproducible builds which we don't really care
about when building rpms in mkosi, so disable it from running as it's
broken and breaks our rpm builds.

mkosi.images/system/mkosi.conf.d/10-centos-fedora/mkosi.build.chroot

@@ -72,6 +72,7 @@ ANNOBIN="no-active-checks" rpmbuild \
     --define "__brp_strip_comment_note %{nil}" \
     --define "__brp_strip_static_archive %{nil}" \
     --define "__brp_check_rpaths %{nil}" \
+    --undefine __brp_add_determinism \
     --define "__elf_exclude_path ^/usr/lib/systemd/tests/unit-tests/.*$" \
     --define "__script_requires %{nil}" \
     --define "_find_debuginfo_dwz_opts %{nil}" \