2023-01-29 10:59:59,046 [INFO] {428683} koji.build.buildroot:555 Running mock as kojibuilder
INFO: mock.py version 3.0 starting (python version = 3.10.2, NVR = mock-3.0-1.fc36)...
Start(bootstrap): init plugins
INFO: selinux disabled
Finish(bootstrap): init plugins
Start: init plugins
INFO: selinux disabled
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: 3.0
INFO: Mock Version: 3.0
Start(bootstrap): dnf install
ERROR: Command failed: 
 # /usr/bin/dnf --installroot /var/lib/mock/f37-build-side-32-misc-devel-196595-12838-bootstrap/root/ --setopt=deltarpm=False --allowerasing --disableplugin=local --disableplugin=spacewalk --disableplugin=versionlock install dnf dnf-plugins-core
Unable to detect release version (use '--releasever' to specify release version)
No matches found for the following disable plugin patterns: local, spacewalk, versionlock
Errors during downloading metadata for repository 'build':
  - Curl error (7): Couldn't connect to server for http://openkoji.iscas.ac.cn/kojifiles/repos/f37-build-side-32-misc-devel/12838/riscv64/repodata/f233aeffb156a821b2525a6ed2e5894e64d541f642ed89133d4437c2445f4023-filelists.xml.gz [Failed to connect to openkoji.iscas.ac.cn port 80 after 2 ms: Connection refused]
  - Curl error (18): Transferred a partial file for http://openkoji.iscas.ac.cn/kojifiles/repos/f37-build-side-32-misc-devel/12838/riscv64/repodata/f233aeffb156a821b2525a6ed2e5894e64d541f642ed89133d4437c2445f4023-filelists.xml.gz [transfer closed with 6259216 bytes remaining to read]
  - Curl error (7): Couldn't connect to server for http://openkoji.iscas.ac.cn/kojifiles/repos/f37-build-side-32-misc-devel/12838/riscv64/repodata/f233aeffb156a821b2525a6ed2e5894e64d541f642ed89133d4437c2445f4023-filelists.xml.gz [Failed to connect to openkoji.iscas.ac.cn port 80 after 1 ms: Connection refused]
Error: Failed to download metadata for repo 'build': Yum repo downloading error: Downloading error(s): repodata/f233aeffb156a821b2525a6ed2e5894e64d541f642ed89133d4437c2445f4023-filelists.xml.gz - Cannot download, all mirrors were already tried without success