$ git clone -n https://src.fedoraproject.org/rpms/perl-Exporter-Lite.git /var/lib/mock/f45-build-23399-597/root/chroot_tmpdir/scmroot/perl-Exporter-Lite
Cloning into '/var/lib/mock/f45-build-23399-597/root/chroot_tmpdir/scmroot/perl-Exporter-Lite'...
$ git fetch origin 7f221a208d4616e6ae4853f3c039d6bd90ab76a2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Exporter-Lite
 * [new ref]         7f221a208d4616e6ae4853f3c039d6bd90ab76a2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7f221a2 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild