$ git clone -n https://src.fedoraproject.org/rpms/erlang-gen_leader.git /var/lib/mock/f45-build-8304-384/root/chroot_tmpdir/scmroot/erlang-gen_leader
Cloning into '/var/lib/mock/f45-build-8304-384/root/chroot_tmpdir/scmroot/erlang-gen_leader'...
$ git fetch origin 0351e5daedf9022689da5822d4d76c1fe464c74b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/erlang-gen_leader
 * [new ref]         0351e5daedf9022689da5822d4d76c1fe464c74b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0351e5d Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild