$ git clone -n https://src.fedoraproject.org/rpms/erlang-log4erl.git /var/lib/mock/f45-build-8367-386/root/chroot_tmpdir/scmroot/erlang-log4erl
Cloning into '/var/lib/mock/f45-build-8367-386/root/chroot_tmpdir/scmroot/erlang-log4erl'...
$ git fetch origin 17b9ee94a46a6cd3d79382be14caa076571f8c66:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/erlang-log4erl
 * [new ref]         17b9ee94a46a6cd3d79382be14caa076571f8c66 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 17b9ee9 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild