$ git clone -n https://src.fedoraproject.org/rpms/R-tibble.git /var/lib/mock/f40-build-789231-135686/root/chroot_tmpdir/scmroot/R-tibble
Cloning into '/var/lib/mock/f40-build-789231-135686/root/chroot_tmpdir/scmroot/R-tibble'...
$ git fetch origin 688d7d34ff6ae371abf3020c6e6a8c30db2e60bb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-tibble
 * [new ref]         688d7d34ff6ae371abf3020c6e6a8c30db2e60bb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 688d7d3 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild