$ git clone -n https://src.fedoraproject.org/rpms/R-tinytest.git /var/lib/mock/f40-build-2322330-58650/root/chroot_tmpdir/scmroot/R-tinytest
Cloning into '/var/lib/mock/f40-build-2322330-58650/root/chroot_tmpdir/scmroot/R-tinytest'...
$ git fetch origin d731e3d0dd279abb9fdf5052d4a508a2426e366e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-tinytest
 * [new ref]         d731e3d0dd279abb9fdf5052d4a508a2426e366e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d731e3d Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild