$ git clone -n https://gitee.com/wanghuan158/qemu.git /var/lib/mock/dist-an23-build-562256-91504/root/chroot_tmpdir/scmroot/qemu
Cloning into '/var/lib/mock/dist-an23-build-562256-91504/root/chroot_tmpdir/scmroot/qemu'...
$ git fetch origin e260da8b17a0233154bb04efb59b70d1fcc1a50d:KOJI_FETCH_HEAD
From https://gitee.com/wanghuan158/qemu
 * [new ref]         e260da8b17a0233154bb04efb59b70d1fcc1a50d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e260da8 Sync upstream changes