$ git clone -n https://src.fedoraproject.org/rpms/perl-Spreadsheet-XLSX.git /var/lib/mock/f45-build-26226-616/root/chroot_tmpdir/scmroot/perl-Spreadsheet-XLSX
Cloning into '/var/lib/mock/f45-build-26226-616/root/chroot_tmpdir/scmroot/perl-Spreadsheet-XLSX'...
$ git fetch origin b5b3b9af619ba59da058509da37351c58481d370:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Spreadsheet-XLSX
 * [new ref]         b5b3b9af619ba59da058509da37351c58481d370 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b5b3b9a Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild