$ git clone -n https://gitee.com/src-opencloudos-rpms/gdk-pixbuf2-xlib.git /var/lib/mock/dist-oc9-build-50012-14595/root/chroot_tmpdir/scmroot/gdk-pixbuf2-xlib
Cloning into '/var/lib/mock/dist-oc9-build-50012-14595/root/chroot_tmpdir/scmroot/gdk-pixbuf2-xlib'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/gdk-pixbuf2-xlib
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9dfebb1 import gdk-pixbuf2-xlib-2.40.2-3.tl4