$ git clone -n https://src.fedoraproject.org/rpms/erlang-rebar3-riak_pb_msgcodegen.git /var/lib/mock/f45-build-8421-388/root/chroot_tmpdir/scmroot/erlang-rebar3-riak_pb_msgcodegen
Cloning into '/var/lib/mock/f45-build-8421-388/root/chroot_tmpdir/scmroot/erlang-rebar3-riak_pb_msgcodegen'...
$ git fetch origin a237e4e23c07c9c8a290a770defa6c4cf5ebc108:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/erlang-rebar3-riak_pb_msgcodegen
 * [new ref]         a237e4e23c07c9c8a290a770defa6c4cf5ebc108 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a237e4e Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild