$ git clone -n https://src.fedoraproject.org/rpms/R-rappdirs.git /var/lib/mock/f40-build-789205-135680/root/chroot_tmpdir/scmroot/R-rappdirs
Cloning into '/var/lib/mock/f40-build-789205-135680/root/chroot_tmpdir/scmroot/R-rappdirs'...
$ git fetch origin 0a5665fa720d550526837664b20770ade92bc9df:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-rappdirs
 * [new ref]         0a5665fa720d550526837664b20770ade92bc9df -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0a5665f Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild