$ git clone -n https://gitee.com/src-opencloudos-rpms/Cython.git /var/lib/mock/dist-oc9-build-126899-76354/root/chroot_tmpdir/scmroot/Cython
Cloning into '/var/lib/mock/dist-oc9-build-126899-76354/root/chroot_tmpdir/scmroot/Cython'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/Cython
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4aa9322 import Cython-0.29.36-6.tl4