$ git clone -n https://src.fedoraproject.org/rpms/perl-Sub-Exporter-Lexical.git /var/lib/mock/f45-build-26354-617/root/chroot_tmpdir/scmroot/perl-Sub-Exporter-Lexical
Cloning into '/var/lib/mock/f45-build-26354-617/root/chroot_tmpdir/scmroot/perl-Sub-Exporter-Lexical'...
$ git fetch origin 8d4b03a074a2bcfd41ff63893c683baf39cd034b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Sub-Exporter-Lexical
 * [new ref]         8d4b03a074a2bcfd41ff63893c683baf39cd034b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8d4b03a Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild