$ /usr/bin/mergerepo_c --koji -b /mnt/koji/repos/dist-an7-updates-build/15853/aarch64/blocklist -a aarch64 -o /tmp/koji/tasks/122/110122/repo --arch-expand -g /mnt/koji/repos/dist-an7-updates-build/15853/groups/comps.xml -r file:///tmp/koji/tasks/122/110122/repo_15853_premerge/ -r http://build.openanolis.cn/kojifiles/repos/centos/7.7.1908/updates/aarch64/ -r http://build.openanolis.cn/kojifiles/repos/centos/7.7.1908/os/aarch64/
C_CREATEREPOLIB: Critical: cr_get_remote_metadata: curl_easy_perform failed: Couldn't resolve host name: Could not resolve host: build.openanolis.cn
Warning: Downloading of repodata failed: http://build.openanolis.cn/kojifiles/repos/centos/7.7.1908/os/aarch64/