$ git clone -n https://src.fedoraproject.org/rpms/erlang-cth_readable.git /var/lib/mock/f45-build-8257-383/root/chroot_tmpdir/scmroot/erlang-cth_readable
Cloning into '/var/lib/mock/f45-build-8257-383/root/chroot_tmpdir/scmroot/erlang-cth_readable'...
$ git fetch origin 91e3342bc8dc8d700e54c1c05575269929182485:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/erlang-cth_readable
 * [new ref]         91e3342bc8dc8d700e54c1c05575269929182485 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 91e3342 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild