$ git clone -n https://src.fedoraproject.org/rpms/perl-RDF-NS.git /var/lib/mock/f45-build-26007-614/root/chroot_tmpdir/scmroot/perl-RDF-NS
Cloning into '/var/lib/mock/f45-build-26007-614/root/chroot_tmpdir/scmroot/perl-RDF-NS'...
$ git fetch origin f1085257aa01b7dbc4e00ed4c96ccff2a0c623e4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-RDF-NS
 * [new ref]         f1085257aa01b7dbc4e00ed4c96ccff2a0c623e4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f108525 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild