$ git clone -n https://gitee.com/wanghuan158/qemu.git /var/lib/mock/dist-an23-build-514381-75110/root/chroot_tmpdir/scmroot/qemu
Cloning into '/var/lib/mock/dist-an23-build-514381-75110/root/chroot_tmpdir/scmroot/qemu'...
$ git fetch origin 4a15a6d1f20381ebfac5466e821cd199013b604a:KOJI_FETCH_HEAD
From https://gitee.com/wanghuan158/qemu
 * [new ref]         4a15a6d1f20381ebfac5466e821cd199013b604a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4a15a6d Sync upstream changes