$ git clone -n https://gitee.com/wanghuan158/qemu.git /var/lib/mock/dist-an23-build-479718-74220/root/chroot_tmpdir/scmroot/qemu
Cloning into '/var/lib/mock/dist-an23-build-479718-74220/root/chroot_tmpdir/scmroot/qemu'...
$ git fetch origin 745694f8343b2bce126c798d4a59feb15a8c4b5b:KOJI_FETCH_HEAD
From https://gitee.com/wanghuan158/qemu
 * [new ref]         745694f8343b2bce126c798d4a59feb15a8c4b5b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 745694f Sync upstream changes