$ git clone -n https://gitee.com/zhuhong_bo/mpfr /var/lib/mock/dist-an7-els-build-451786-73148/root/chroot_tmpdir/scmroot/mpfr
Cloning into '/var/lib/mock/dist-an7-els-build-451786-73148/root/chroot_tmpdir/scmroot/mpfr'...
$ git fetch origin a7:KOJI_FETCH_HEAD
From https://gitee.com/zhuhong_bo/mpfr
 * [new branch]      a7         -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2d29451 ppc builds for multilib support