$ git clone -n https://src.fedoraproject.org/rpms/R-qpdf.git /var/lib/mock/f42-build-3264975-41247/root/chroot_tmpdir/scmroot/R-qpdf
Cloning into '/var/lib/mock/f42-build-3264975-41247/root/chroot_tmpdir/scmroot/R-qpdf'...
$ git fetch origin 1974fa3d6944aff82dd0cd7fe0352dcd6f371858:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-qpdf
 * [new ref]         1974fa3d6944aff82dd0cd7fe0352dcd6f371858 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1974fa3 Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild