I have the same problem. Malwarebytes Anti-Malware Home (Premium) 184.108.40.2062 has quarantined SourceTree.exe and labelled it "Trojan.Intact" a few hours ago.
I restored the file and scanned with Avast Antivirus 2015 and it reports "no threat found", so it seems to be a false positive.
I'm running SourceTree 220.127.116.11 by the way.
Supported Platforms macOS Sourcetree has a lot to offer and, like many developer tools, finding and using it all can be a challenge, especially for a new user. Everyone might not love ...
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