$ git clone -n https://src.fedoraproject.org/rpms/erlang-ct_helper.git /var/lib/mock/f45-build-8256-382/root/chroot_tmpdir/scmroot/erlang-ct_helper
Cloning into '/var/lib/mock/f45-build-8256-382/root/chroot_tmpdir/scmroot/erlang-ct_helper'...
$ git fetch origin 472471eace9504dd44f61fdd27d4ea76e49ae4e1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/erlang-ct_helper
 * [new ref]         472471eace9504dd44f61fdd27d4ea76e49ae4e1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 472471e Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild