$ git clone -n https://gitee.com/src-opencloudos-rpms/xapian-core.git /var/lib/mock/dist-oc9-build-45521-14591/root/chroot_tmpdir/scmroot/xapian-core
Cloning into '/var/lib/mock/dist-oc9-build-45521-14591/root/chroot_tmpdir/scmroot/xapian-core'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/xapian-core
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 75814e7 import xapian-core-1.4.18-3.tl4