Content-length header is computed as len(str) not len(bytes).
PR #2639
Metadata Update from @tkopecek: - Custom field Size adjusted to None
Metadata Update from @jcupova: - Issue tagged with: testing-ready
Metadata Update from @jobrauer: - Issue tagged with: testing-done
Commit fba9c129 fixes this issue
Commit 87ff6157 fixes this issue
This issue has been migrated to Fedora Forge: https://forge.fedoraproject.org/koji/koji/issues/2638
Please continue any further discussion there.