$ git clone -n https://gitee.com/src-opencloudos-rpms/proj.git /var/lib/mock/dist-oc9-epol-build-53705-14768/root/chroot_tmpdir/scmroot/proj
Cloning into '/var/lib/mock/dist-oc9-epol-build-53705-14768/root/chroot_tmpdir/scmroot/proj'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/proj
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b1a7de9 import proj-9.2.0-2.tl4