I honestly don't believe the producer of that GitS track went ahead and sampled these breaks off their original source. In the VGM and soundtrack industry it was (and still is) an established custom to use samples of commissioned CDs and libraries that were released for this exact purpose in order to avoid copyright issues. It's more likely to me that the sample may already be a pre-layered loop off a sample CD than composed of genuinely recorded bits from vinyl. Time and money are very strict issues in this business after all. In 1997 the range of breakbeat sample CDs was rather low so I would look into that if I were you!
There is a lot of truth to this, japanese VGM producers would often share studios as well (depending on which company they worked for). Even when they didn't, you'd occasionally hear similar sounds pop up (mainly occasionally stock vocal snippets as well as breaks), though obviously this is after the 8/16bit days. That said, it could have been layered and looped after the fact, but the loops could have easily been from a single source. (don't rule out vinyl sampling, a lot of VGM guys do a ton of solo work as well)
That said, just about everyone who was on the GITS video game OST were techno producers from around the world. Not typical VGM people, on top of that, nowhere is it mentioned (at least in english) who did the music for that bit (I know it wasn't Ishiino). I've always wondered myself who did it, but I have never really found out (as far as the game goes, the only other person mentioned as music producer is a guy named Terumasa Yabushita). Sony (AFAIK) never really had a sound team the likes of Konami or Namco, so I'm a tad stumped. Definitely look for popular sample cds at that time, esp with the track you mentioned OP, you should have a lot of luck!
Edited by 4kb, 07 May 2016 - 01:52.