$ git clone -n https://src.fedoraproject.org/rpms/erlang-riak_pb.git /var/lib/mock/f45-build-8437-389/root/chroot_tmpdir/scmroot/erlang-riak_pb
Cloning into '/var/lib/mock/f45-build-8437-389/root/chroot_tmpdir/scmroot/erlang-riak_pb'...
$ git fetch origin 7f3010402fcc44342123d85c96936e54e28d4bdf:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/erlang-riak_pb
 * [new ref]         7f3010402fcc44342123d85c96936e54e28d4bdf -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7f30104 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild