Exactly what is it you are looking for? What do you mean by post interview for "position discrimination?" In other words, you were interviewed for a position and you feel you were discriminated against, and you want some sort of copy of the interview or reason you were not hired so you can decide if you were discriminated against? We're going to assume, though you did not say, that this is a state position. If it is a county or federal position, the general form will be similar with slight variations.
In the first place, there are few places in hiring that are anywhere near so carefully monitored for discrimination as federal, state and local government jobs. There are federal requirements. These have been in place for years. Unlike private industry, they are unlikely to make stupid or blatant discrimination errors. They've got whole departments in their Human Resources and hiring agencies that do nothing but keep this stuff legal and get involved with any and all possible discrimination issues. If you want to take on the state or the fed or even a city or county government for discrimination, it's something to do with a good employment attorney. It's certainly worth discussing with one of these. And if they don't see anything there, there probably isn't anything there.
You likely know about civil service and the rather complicated and highly regulated job selection process of any state position. So what job posting are you wanting to know about? Have you already had an interview for this position and want to know why you were not hired? Of course you know that is not the type of stuff that is going to be on the agency's website for general consumption, right? You can't get this sort of information just by looking it up.
There will be somewhere, I promise, a list of open state positions at any given time. More than likely, there will be open application taking for any vacant state position posted on their state HR website. These postings will include the qualifications for this position and usually an application deadline. Many positions in state government require a civil service test. Those can usually be taken by candidates at any time. Usually one has to announce the job title of the position they are applying for, and possibly get on a register of available candidates for this position. Then at the time there is an opening the hiring agent for the particular department and position the hiring person can do one of two things. There is first of all, a promotional register of people who already work for the department who are interested in this position. This means people inside the department will have access to and much better changes to get positions that become available. If the employer asks for a promotional register, they only need to look at the top three/five/two candidates and the job may never become available for application or interviews from the general public. This of course means that everyone who does not already work for the department is automatically discriminated against. But this has been determined to be legitimate for them to do.
If this is an entry level position, which is the usual way people get into state government work, or if this is a specialized position that no one inside is interested in, then the hiring agency will "call for a register" and is obligated to contact the top so many people (five/three/two) on the register. If they are interested, they are offered an interview. The hiring agents are required to interview until they have given themselves a certain number of choices. Usually the employer will be required to provide the state's HR and EEOC office the reasons for hiring candidate two instead of candidate three or candidate one or candidate five. You may be able to get this result by checking with the state HR. I would suspect this is what you knew of someone getting to see, though usually it takes a request by an interested party such as an attorney.
Hint. Since the state is so self conscious about avoiding the appearance of discrimination, and is always federally required to give job preference to certain groups (such as disabled veterans) there isn't likely going to be any clear cut evidence of discrimination in any of those reasons for not hiring one or the other candidates. Usually "more qualified" is tough to prove, tough to argue with, and that's the reason they try to stick close to.
There are categories of state jobs, however, that do not require civil service. These are the highest few positions in each department and they usually go as political appointments. Likewise, when administrations change, or the governor or a state official is displeased, these people can be dumped unceremoniously, with very little justification required ( just as they always can in private industry). You get no qualifications, no protests of discrimination for who gets the political plums, though in these modern days and times, even the new administrations will try to pretend they're giving EEOC consideration and including a few highly qualified people who are EEOC friendly in some way.