$ git clone -n https://gitee.com/src-opencloudos-rpms/python-dulwich.git /var/lib/mock/dist-oc9-build-44312-14591/root/chroot_tmpdir/scmroot/python-dulwich
Cloning into '/var/lib/mock/dist-oc9-build-44312-14591/root/chroot_tmpdir/scmroot/python-dulwich'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/python-dulwich
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3f74f95 import python-dulwich-0.20.35-3.tl4