Now copr build cannot be proceeded: https://copr-be.cloud.fedoraproject.org/results/fujiwara/ibus/fedora-25-x86_64/00536432-ibus/
I also filed https://bugzilla.redhat.com/show_bug.cgi?id=1439140
That should be fixed now ensuring the latest libsolv, hawkey, and dnf-plugins-core packages are installed. Thank you for the report!
Metadata Update from @kevin: - Issue close_status updated to: Fixed - Issue status updated to: Closed (was: Open)