$ git clone -n https://src.fedoraproject.org/rpms/R-pdftools.git /var/lib/mock/f38-build-side-42-init-devel-970374-28812/root/chroot_tmpdir/scmroot/R-pdftools
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-970374-28812/root/chroot_tmpdir/scmroot/R-pdftools'...
$ git fetch origin 99f412f7fedb01798478e8435d5449823009c234:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-pdftools
 * [new ref]         99f412f7fedb01798478e8435d5449823009c234 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 99f412f Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild