$ git clone -n https://gitee.com/wanghuan158/qemu.git /var/lib/mock/dist-an23-build-445954-73299/root/chroot_tmpdir/scmroot/qemu
Cloning into '/var/lib/mock/dist-an23-build-445954-73299/root/chroot_tmpdir/scmroot/qemu'...
$ git fetch origin bdde593858402c1b84dcffaa795f9cb119e0756a:KOJI_FETCH_HEAD
From https://gitee.com/wanghuan158/qemu
 * [new ref]         bdde593858402c1b84dcffaa795f9cb119e0756a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bdde593 Sync upstream changes