e----------------------------------------------------------------------------| B----------------------------------------------------------------------------| G----------------------------------------------------------------------------| D----------------------------------------------------------------------------| A-5-5-5-8-5-5-8-7------------------------------------------------------------| D-0-0-0-0-0-0-0-0------------------------------------------------------------| Repeat a few times...This also is played through most of the song... Many people play it on the 4th string on the 2nd and 3rd fret but if you listen to the version you can play this with a guitar in drop-D tuning. Plus, with the drums really and if you play this riff with the right dynamic it just sounds way cool!
https://primanota.net/creedence-clearwater-revival/heard-it-through-the-gapevine-chords.htm