Every time I encounter that quest, it's very hard to beat them. I often wonder of maybe the Gith Patrol is meant to be a later when you and your companion have leveled up. The problem is we only have level 4 available and we don't get enough gear to loot that is better than what we have. For example, in Dragon Age: Inquisition I learned early that it's impossible to kill dragons unless you are at least level 20. In Baldur's Gate, it might be the same where some regions are meant to be a higher level, they just don't tell you. It seems that in EA everything is at you current level but it doesn't feel like it. There are moments where enemies seem to be more advanced that you and your party and are harder to beat.
You can kill the dragons at 15. There's at least one lower level one. I've done it. You also need the right party comp for it.
But I do agree, I had a hard time with the gith patrol unless I resorted to barrelmancy so I'm just one of those "I'll come back to it when higher level" people.