2019-09-25 11:25:05,429 [INFO] {21652} koji.build.buildroot:505 Running mock as kojibuilder
INFO: mock.py version 1.4.14 starting (python version = 3.7.3)...
Start: init plugins
INFO: selinux enabled
Finish: init plugins
Start: run
Start: clean chroot
Finish: clean chroot
Start: chroot init
INFO: calling preinit hooks
INFO: enabled HW Info plugin
Mock Version: 1.4.14
INFO: Mock Version: 1.4.14
Start: dnf install
ERROR: Command failed: 
 # /usr/bin/dnf --installroot /var/lib/mock/f31-build-117343-34697/root/ --setopt=install_weak_deps=0 groupinstall appliance-build --setopt=tsflags=nocontexts
Unable to detect release version (use '--releasever' to specify release version)
Last metadata expiration check: 0:05:28 ago on Wed 25 Sep 2019 11:26:05 AM EDT.
No match for group package "grub"
Error: 
 Problem: package python3-dnf-4.2.7-2.0.riscv64.fc31.noarch requires python3-hawkey >= 0.35.1, but none of the providers can be installed
  - package python3-hawkey-0.35.3-5.fc31.riscv64 conflicts with python3-dnf < 4.2.9-3 provided by python3-dnf-4.2.7-2.0.riscv64.fc31.noarch
  - package python3-imgcreate-1:27.1-2.fc31.riscv64 requires python3-dnf >= 1.1.0, but none of the providers can be installed
  - package appliance-tools-009.0-5.4.riscv64.fc31.noarch requires python3-imgcreate >= 1:25.0-2, but none of the providers can be installed
  - conflicting requests
(try to add '--allowerasing' to command line to replace conflicting packages or '--skip-broken' to skip uninstallable packages)