$ git clone -n https://gitee.com/src-opencloudos-rpms/mariadb-connector-c.git /var/lib/mock/dist-oc9-build-42917-14591/root/chroot_tmpdir/scmroot/mariadb-connector-c
Cloning into '/var/lib/mock/dist-oc9-build-42917-14591/root/chroot_tmpdir/scmroot/mariadb-connector-c'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/mariadb-connector-c
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2ad0561 import mariadb-connector-c-3.3.1-4.tl4