$ git clone -n https://src.fedoraproject.org/rpms/R-magrittr.git /var/lib/mock/f40-build-2270138-54793/root/chroot_tmpdir/scmroot/R-magrittr
Cloning into '/var/lib/mock/f40-build-2270138-54793/root/chroot_tmpdir/scmroot/R-magrittr'...
$ git fetch origin 6d282fcf120007b0577b9ee370139761bd53e10c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-magrittr
 * [new ref]         6d282fcf120007b0577b9ee370139761bd53e10c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6d282fc Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild