$ git clone -n https://gitee.com/wency_cn/libtracefs.git /var/lib/mock/dist-an23-build-492493-74553/root/chroot_tmpdir/scmroot/libtracefs
Cloning into '/var/lib/mock/dist-an23-build-492493-74553/root/chroot_tmpdir/scmroot/libtracefs'...
$ git fetch origin 742bdca082594ac3d77299a14cca27f2fb9b9128:KOJI_FETCH_HEAD
From https://gitee.com/wency_cn/libtracefs
 * [new ref]         742bdca082594ac3d77299a14cca27f2fb9b9128 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 742bdca Update code from upstream