There is no such document, unfortunately.
If you understand Git, then 90% of the functions are self explanatory: https://git-scm.com/book
If you do understand Git and don't understand a function in SourceTree, search for and/or ask specific questions here.
Supported Platforms macOS Windows To make using Sourcetree as simple yet powerful as possible we embed (bundle) dependencies such as Git, Git LFS, and Mercurial. We strive to keep these...
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