$ git clone -n https://gitee.com/wanghuan158/qemu.git /var/lib/mock/dist-an23-build-440969-73164/root/chroot_tmpdir/scmroot/qemu
Cloning into '/var/lib/mock/dist-an23-build-440969-73164/root/chroot_tmpdir/scmroot/qemu'...
$ git fetch origin e420979ce976c2e68b7859a119f4368225622f6e:KOJI_FETCH_HEAD
From https://gitee.com/wanghuan158/qemu
 * [new ref]         e420979ce976c2e68b7859a119f4368225622f6e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e420979 mm