$ /usr/bin/mergerepo_c --koji -b /mnt/koji/repos/dist-an7-plus-build/22202/x86_64/blocklist -a x86_64 -o /tmp/koji/tasks/5763/155763/repo --arch-expand -g /mnt/koji/repos/dist-an7-plus-build/22202/groups/comps.xml -r file:///tmp/koji/tasks/5763/155763/repo_22202_premerge/ -r http://build.openanolis.cn/kojifiles/repos/anolis-7-local-repo-external/x86_64/ -r http://build.openanolis.cn/kojifiles/repos/centos/7.7.1908/updates/x86_64/ -r http://build.openanolis.cn/kojifiles/repos/centos/7.7.1908/os/x86_64/ -r https://mirrors.tuna.tsinghua.edu.cn/epel/7/
C_CREATEREPOLIB: Critical: cr_get_remote_metadata: curl_easy_perform failed: HTTP response code said error: The requested URL returned error: 404 Not Found
Warning: Downloading of repodata failed: https://mirrors.tuna.tsinghua.edu.cn/epel/7/