$ git clone -n https://gitee.com/src-opencloudos-rpms/python-osc-lib.git /var/lib/mock/dist-oc9-epol-build-54060-14768/root/chroot_tmpdir/scmroot/python-osc-lib
Cloning into '/var/lib/mock/dist-oc9-epol-build-54060-14768/root/chroot_tmpdir/scmroot/python-osc-lib'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/python-osc-lib
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 26f2357 import python-osc-lib-2.3.1-2.tl4