$ git clone -n https://gitee.com/wanghuan158/qemu.git /var/lib/mock/dist-an23-build-488368-74434/root/chroot_tmpdir/scmroot/qemu
Cloning into '/var/lib/mock/dist-an23-build-488368-74434/root/chroot_tmpdir/scmroot/qemu'...
$ git fetch origin e3646fd897daf3415a66f4955b48a1bab0013041:KOJI_FETCH_HEAD
From https://gitee.com/wanghuan158/qemu
 * [new ref]         e3646fd897daf3415a66f4955b48a1bab0013041 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e3646fd Sync upstream changes