Recover overwritten Build

Good day community,

today i moved a changeog.txt file i created into its belongig build folder. As it occured, i accidently replaced the same build folder by building a slightly newer version of my project with the exact same name, onto it. Of course, my old project, and with it my changelog file is gone.

Long story short: Does anybody see any possibility to either recover the whole overwritten build-folder, or just the txt file? (Currently working on OSX Yosemite 10.10.03, with Unity 5.0.1f1 - Personal Edition)

Thanks in advance, Toonk.