$ git clone -n https://src.fedoraproject.org/rpms/erlang-eimp.git /var/lib/mock/f45-build-8270-383/root/chroot_tmpdir/scmroot/erlang-eimp
Cloning into '/var/lib/mock/f45-build-8270-383/root/chroot_tmpdir/scmroot/erlang-eimp'...
$ git fetch origin 104c129c3b498f7681fda998b2f7b83f7e8a6e3f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/erlang-eimp
 * [new ref]         104c129c3b498f7681fda998b2f7b83f7e8a6e3f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 104c129 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild