$ git clone -n https://gitee.com/mgb01105731/mpfr.git /var/lib/mock/dist-an27-build-526762-79199/root/chroot_tmpdir/scmroot/mpfr
Cloning into '/var/lib/mock/dist-an27-build-526762-79199/root/chroot_tmpdir/scmroot/mpfr'...
$ git fetch origin db5bf87976976dbcc645c8dfa79c73d3c55e0e7b:KOJI_FETCH_HEAD
From https://gitee.com/mgb01105731/mpfr
 * [new ref]         db5bf87976976dbcc645c8dfa79c73d3c55e0e7b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at db5bf87 Init package