If the water is coming into the sump pit, that means the area of the basement is submerged in water. You need to find out the cause of the water around the basement. It could be you will have to reslope the grade around the basement foundation away from the foundation to keep the water from leaching in along the footings. Make sure the downspouts are extended away from the footings. If your home is build on a swamp, or in an area with a high water table, you may be able to do nothing about the water under the concrete. You might be able to repair the hole in the concrete sump, but the pressure will build up and start leaking elsewhere. If it was me, I would drill holes in the side of the sump so the water could get in, then pump it outside and away from the home. If you are able to then, lower the water table (unlikely because of the wet seasons we have had) patch the holes. But I prefer to use the sump basket as a collection point for the water.