"SSL certificate problem: self signed certificate in certificate chain"

[Justin D. Fisher]

I am using SourceTree on a Windows 10 host.  I added the path to the git.exe (C:\Users\fisherju\AppData\Local\Atlassian\SourceTree\git_local\cmd) to my Path environment variable so that I can use git from the command line. 

Initially I was getting the same certificate errors while using git.exe. I reviewed many posts online for fixing this error.   Configuring git to use schannel corrects the problem from the command line.  I can also use the method for configuring openssl to use a ca-bundle.crt file.

I can use git from the command line successfully and from the "terminal" from inside of SourceTree.  However I can not use SourceTree without setting the option git option to "Disable SSL certificate validation".  

How do I configure SourceTree to use schannel so that it can correctly perform SSL certificate validation.