If you never committed the changes, then SourceTree / git aren't going to be able to help you. You'd have to try to use an operating system level solution, as Seth has suggested. SourceTree shouldn't have let you revert a file and override uncommitted changes, though, at least not without an additional dialog box warning you of what you were about to do.
Supported Platforms macOS Windows We recently introduced support for additional hosting services such as GitHub Enterprise, GitLab (Cloud, Community Edition, Enterprise Edition), and...
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