$ git clone -n https://gitee.com/src-opencloudos-rpms/python-nltk.git /var/lib/mock/dist-oc9-build-53231-14748/root/chroot_tmpdir/scmroot/python-nltk
Cloning into '/var/lib/mock/dist-oc9-build-53231-14748/root/chroot_tmpdir/scmroot/python-nltk'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/python-nltk
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 99856f8 import python-nltk-3.8.1-2.tl4