Interesting question. I can't say for sure but think I have seen this phenomenon on unwatered sections of golf courses and athletic fields (primarily practice fields). After aerating and overseeding lots of new growth without much rain. I have always believed grass grass grows aggressively when there is a big difference between daytime and nighttime temperatures and at those times in Fall with heavy persistent dew.
I agree with humble1 that after it germinates it is not going to make it without moisture.