$ git clone -n https://gitee.com/src-opencloudos-rpms/mandoc.git /var/lib/mock/dist-oc9-build-42910-14591/root/chroot_tmpdir/scmroot/mandoc
Cloning into '/var/lib/mock/dist-oc9-build-42910-14591/root/chroot_tmpdir/scmroot/mandoc'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/mandoc
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 18be6c8 import mandoc-1.14.6-4.tl4