$ git clone -n https://gitee.com/wanghuan158/qemu.git /var/lib/mock/dist-an23-build-473309-74118/root/chroot_tmpdir/scmroot/qemu
Cloning into '/var/lib/mock/dist-an23-build-473309-74118/root/chroot_tmpdir/scmroot/qemu'...
$ git fetch origin 83b597fbdf8e87d49cc26dde3f3b604c24abd031:KOJI_FETCH_HEAD
From https://gitee.com/wanghuan158/qemu
 * [new ref]         83b597fbdf8e87d49cc26dde3f3b604c24abd031 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 83b597f Sync upstream changes