Does Sourcetree show actual files in the File Status view? If so it sounds like something has changed the files on the filesystem, perhaps you have git configured to change line endings?
Can you view a diff of the files?
Alternatively if the log view of Sourcetree says there are changes but the File Status view does not show any files, this can occur under certain circumstances due to differences in how libgit2 and git.exe view the repository.
You can test this by going into the Tools/Options/Git tab and checking the "disable libgt2 integration" option and seeing if Sourcetree still reports file changes.
Supported Platforms macOS Windows We recently introduced support for additional hosting services such as GitHub Enterprise, GitLab (Cloud, Community Edition, Enterprise Edition), and...
Connect with like-minded Atlassian users at free events near you!Find an event
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no Community Events near you at the moment.Host an event
You're one step closer to meeting fellow Atlassian users at your local event. Learn more about Community Events