$ git clone -n https://gitee.com/wanghuan158/qemu.git /var/lib/mock/dist-an23-build-449793-73445/root/chroot_tmpdir/scmroot/qemu
Cloning into '/var/lib/mock/dist-an23-build-449793-73445/root/chroot_tmpdir/scmroot/qemu'...
$ git fetch origin 24ae704a7a5ea4199247284f0c3d834fd56be270:KOJI_FETCH_HEAD
From https://gitee.com/wanghuan158/qemu
 * [new ref]         24ae704a7a5ea4199247284f0c3d834fd56be270 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 24ae704 Sync upstream changes