$ git clone -n https://gitee.com/src-opencloudos-rpms/xorg-x11-drv-nouveau.git /var/lib/mock/dist-oc9-build-45605-14591/root/chroot_tmpdir/scmroot/xorg-x11-drv-nouveau
Cloning into '/var/lib/mock/dist-oc9-build-45605-14591/root/chroot_tmpdir/scmroot/xorg-x11-drv-nouveau'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/xorg-x11-drv-nouveau
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ca05e12 import xorg-x11-drv-nouveau-1.0.17-3.tl4