$ git clone -n https://src.fedoraproject.org/rpms/R-RcppDate.git /var/lib/mock/f40-build-2270336-54807/root/chroot_tmpdir/scmroot/R-RcppDate
Cloning into '/var/lib/mock/f40-build-2270336-54807/root/chroot_tmpdir/scmroot/R-RcppDate'...
$ git fetch origin 5b1fb0a5bc8b0d78c13c4d2a7b245017b4e934e3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-RcppDate
 * [new ref]         5b1fb0a5bc8b0d78c13c4d2a7b245017b4e934e3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5b1fb0a Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild