$ git clone -n https://gitee.com/wenyuzifang/libtracefs.git /var/lib/mock/dist-an23-build-485413-74348/root/chroot_tmpdir/scmroot/libtracefs
Cloning into '/var/lib/mock/dist-an23-build-485413-74348/root/chroot_tmpdir/scmroot/libtracefs'...
$ git fetch origin fd9eebdff4641264bb6599395db92294f7550bd8:KOJI_FETCH_HEAD
From https://gitee.com/wenyuzifang/libtracefs
 * [new ref]         fd9eebdff4641264bb6599395db92294f7550bd8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fd9eebd Update code from upstream