$ git clone -n https://src.fedoraproject.org/rpms/R-sass.git /var/lib/mock/f40-build-2270416-54814/root/chroot_tmpdir/scmroot/R-sass
Cloning into '/var/lib/mock/f40-build-2270416-54814/root/chroot_tmpdir/scmroot/R-sass'...
$ git fetch origin d40d61ff8c3bec6cebfa47d875a5489787483da7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-sass
 * [new ref]         d40d61ff8c3bec6cebfa47d875a5489787483da7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d40d61f Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild