I have always been anoyed that I could not easily use the terminal in sourcetree to do some GIT operations as it turns out the keys listed in Pageant to operate Sourcetree on Windows normally are not accessible.
Today I found a solution but it is hard to implement this consistently on my own since it depends on setting the GIT_SSH to point to plink.
Since you provide plink in the application folder I need to set this again on every update as the application folder SourceTree is installed in contains the version number
.
I think this might be easily solved by your team by setting the proper value of to the GIT_SSH environment variable on invocation of the terminal from your side as you would now the exact version and path when starting the terminal from SourceTree.