$ git clone -n https://src.fedoraproject.org/rpms/erlang-idna.git /var/lib/mock/f45-build-8348-385/root/chroot_tmpdir/scmroot/erlang-idna
Cloning into '/var/lib/mock/f45-build-8348-385/root/chroot_tmpdir/scmroot/erlang-idna'...
$ git fetch origin 60437f07e0cc2482589ed003ac08ed5db53334b2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/erlang-idna
 * [new ref]         60437f07e0cc2482589ed003ac08ed5db53334b2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 60437f0 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild