Some inmates that have minor cases are being released in some advanced countries.
That is the easiest what can be done. Usually prisons everywhere lie in conditions that are below standard. Simply because there is always to little money to build more prisons. Crowd is very bad fro covid-19 spreading. So only smart thing is to send some prisoners to sit few months at home. I dont see any reason why that should not be done everywhere in the world. Well rich countries can fast build more prisons. Poor simply send few prisoners to housearrest.
Who will monitor whether the prisoner is at home? Do you think that after such an "amnesty" the prisoners will sit quietly and wait until they are locked back in their cells? I do not think.
What will they eat? They will not have work, which means they will not have money. That is, they will be fed by their families, who may not even be waiting for them. The risk that such a rabble will begin to rob, steal and rape is too great.
I believe they have some thing on their feet and local police checks them. Every country have a system made fro people to serve from their homes. Of course that are fro those that are not dangerous and probabyl allready sit part of their sentence. You should google about it to see how is organised in your country.