$ git clone -n https://gitee.com/src-opencloudos-rpms/ca-certificates.git /var/lib/mock/dist-oc9-build-40760-14591/root/chroot_tmpdir/scmroot/ca-certificates
Cloning into '/var/lib/mock/dist-oc9-build-40760-14591/root/chroot_tmpdir/scmroot/ca-certificates'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/ca-certificates
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dabd351 import ca-certificates-2021.2.52-5.tl4