$ git clone -n https://gitee.com/wenyuzifang/gdk-pixbuf2.git /var/lib/mock/dist-an23-build-464767-73881/root/chroot_tmpdir/scmroot/gdk-pixbuf2
Cloning into '/var/lib/mock/dist-an23-build-464767-73881/root/chroot_tmpdir/scmroot/gdk-pixbuf2'...
$ git fetch origin a35880e737c20661dad7ec0034678e3312236a37:KOJI_FETCH_HEAD
From https://gitee.com/wenyuzifang/gdk-pixbuf2
 * [new ref]         a35880e737c20661dad7ec0034678e3312236a37 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a35880e Update code from upstream