$ git clone -n https://src.fedoraproject.org/rpms/perl-Test-NoPlan.git /var/lib/mock/f45-build-26785-619/root/chroot_tmpdir/scmroot/perl-Test-NoPlan
Cloning into '/var/lib/mock/f45-build-26785-619/root/chroot_tmpdir/scmroot/perl-Test-NoPlan'...
$ git fetch origin a12a4fd80851e2a2e2ddd7b69214eb15ffc25cd8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Test-NoPlan
 * [new ref]         a12a4fd80851e2a2e2ddd7b69214eb15ffc25cd8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a12a4fd Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild