$ git clone -n https://src.fedoraproject.org/rpms/perl-Object-Import.git /var/lib/mock/f45-build-25480-611/root/chroot_tmpdir/scmroot/perl-Object-Import
Cloning into '/var/lib/mock/f45-build-25480-611/root/chroot_tmpdir/scmroot/perl-Object-Import'...
$ git fetch origin 11a73cafcd20515de38483b2938a9eb4910a938d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Object-Import
 * [new ref]         11a73cafcd20515de38483b2938a9eb4910a938d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 11a73ca Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild