PR #1015 hit the problem, that '~/xxx' is not expanded in koji. Nevertheless, it fixes only part of the problem. Defaults are always wrong. Also we don't want to expand all string values in config, but only path-related ones.
Metadata Update from @tkopecek: - Issue tagged with: bug, easyfix
PR #1023
Commit 96a964dd fixes this issue
Commit 27abb872 fixes this issue
Metadata Update from @tkopecek: - Issue set to the milestone: 1.17
This issue has been migrated to Fedora Forge: https://forge.fedoraproject.org/koji/koji/issues/1022
Please continue any further discussion there.