There definitely was in KH2 in both the Japanese and NA release, but I guess you mean the first game.

Sephiroth was added to the original when it made a State-side release. A while later, Kingdom Hearts: Final Mix was released in Japan. It not only included the additional three secret bosses (Sephiroth, Kurt Ziza, and the Clocktower Phantom), but a fourth, the Enigmatic Man in Hollow Bastion donning the Organization's trademark cloak ((SPOILER)It was Xehanort.).

Anyway, after defeating Sephiroth for the first time, there was a scene in which Cloud and Sephiroth fought. So in a roundabout way of saying it: yes. I'm sure you can find the video with subtitles on YouTube without much difficulty.