$ git clone -n https://gitee.com/wenyuzifang/python-simplejson.git /var/lib/mock/dist-an23-build-481522-74252/root/chroot_tmpdir/scmroot/python-simplejson
Cloning into '/var/lib/mock/dist-an23-build-481522-74252/root/chroot_tmpdir/scmroot/python-simplejson'...
$ git fetch origin dcceccf281d52a8925133b4a166be03ec4ca825e:KOJI_FETCH_HEAD
From https://gitee.com/wenyuzifang/python-simplejson
 * [new ref]         dcceccf281d52a8925133b4a166be03ec4ca825e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dcceccf Update code from upstream