$ git clone -n https://src.fedoraproject.org/rpms/R-rematch2.git /var/lib/mock/f40-build-2305094-57059/root/chroot_tmpdir/scmroot/R-rematch2
Cloning into '/var/lib/mock/f40-build-2305094-57059/root/chroot_tmpdir/scmroot/R-rematch2'...
$ git fetch origin 36c74af410de3deafdc9e48dea9e9c9bbd149e5e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-rematch2
 * [new ref]         36c74af410de3deafdc9e48dea9e9c9bbd149e5e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 36c74af Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild