$ git clone -n https://src.fedoraproject.org/rpms/erlang-erlsom.git /var/lib/mock/f45-build-8285-383/root/chroot_tmpdir/scmroot/erlang-erlsom
Cloning into '/var/lib/mock/f45-build-8285-383/root/chroot_tmpdir/scmroot/erlang-erlsom'...
$ git fetch origin 3b4fabd6c4b133e101a4dab5075fd921780dc43b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/erlang-erlsom
 * [new ref]         3b4fabd6c4b133e101a4dab5075fd921780dc43b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3b4fabd Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild