$ git clone -n https://src.fedoraproject.org/rpms/R-pdftools.git /var/lib/mock/f40-build-800696-143611/root/chroot_tmpdir/scmroot/R-pdftools
Cloning into '/var/lib/mock/f40-build-800696-143611/root/chroot_tmpdir/scmroot/R-pdftools'...
$ git fetch origin ef6d4703661eafbd0df7bd1af74d7c69c5816b98:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-pdftools
 * [new ref]         ef6d4703661eafbd0df7bd1af74d7c69c5816b98 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ef6d470 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild