2021-09-18 11:19:13,787 [INFO] {536868} koji.build.buildroot:540 Running mock as kojibuilder
INFO: mock.py version 2.9 starting (python version = 3.9.4, NVR = mock-2.9-1.fc33)...
Start(bootstrap): init plugins
INFO: selinux enabled
Finish(bootstrap): init plugins
Start: init plugins
INFO: selinux enabled
Finish: init plugins
INFO: Signal handler active
Start: run
Start: clean chroot
Finish: clean chroot
Start(bootstrap): chroot init
INFO: calling preinit hooks
INFO: enabled HW Info plugin
Mock Version: 2.9
INFO: Mock Version: 2.9
Start(bootstrap): dnf install
ERROR: Command failed: 
 # /usr/bin/dnf --installroot /var/lib/mock/roe1-build-5246-1214-bootstrap/root/ --setopt=deltarpm=False --allowerasing --disableplugin=local --disableplugin=spacewalk install dnf dnf-plugins-core --setopt=tsflags=nocontexts
Unable to detect release version (use '--releasever' to specify release version)
No matches found for the following disable plugin patterns: local, spacewalk
Errors during downloading metadata for repository 'build':
  - Curl error (35): SSL connect error for https://openkoji.iscas.ac.cn/kojifiles/repos/roe1-build/1214/riscv64/repodata/repomd.xml [OpenSSL SSL_connect: SSL_ERROR_SYSCALL in connection to openkoji.iscas.ac.cn:443 ]
Error: Failed to download metadata for repo 'build': Cannot download repomd.xml: Cannot download repodata/repomd.xml: All mirrors were tried