For a brief period, select Kochikame Hindi episodes were available on Voot (now JioCinema). However, the library has been rotated out. Check periodically, but do not expect the full set.
While the original Japanese series ran for 373 episodes (with additional specials and movies), the Hindi dub history is complex. Total Episodes Dubbed
If you're looking to watch Kochikame all 373 episodes online in Hindi, there are several options available. Here are a few: