As things currently sit, the official spread for the game is Georgia -6.5, which is a full point higher than it was at 9:00am Wednesday morning. In terms of game predictions, this isn't what Texas football fans want to see right now.
As a member of Longhorn Nation, you never want to see physical proof that a good portion of college football bettors are betting against the 'Horns. It's much more encouraging to see the line get closer to 0 each week, which means that everyone is siding with Texas if they're the underdog. If Texas is the favorite, we want the number to get larger.
The game spread usually only moves due to betting action by both the public and sharp bettors. This one point move from -5.5 to -6.5 means that the public is currently betting on the Bulldogs to cover the spread.
The ultimate goal of a sportsbook is to make sure that there's "even money" on both sides of the line, so if people are betting on Georgia to cover the -5.5 point spread, it would move to -6 or -6.5. This way, the Texas +6 or +6.5 number is more attractive for bettors if they think that the Longhorns will be able to keep it close.
Similarly to how the line moved towards the Bulldogs because of the heavy action for them to cover, the line could also move back down to Georgia -6 if the public starts putting money on Texas +6.5 over the next couple of days.