[MementoWeb.org] https://downloads.atlassian.com/software/sourcetree/windows/SourceTreeSetup_1.9.13.7.exe
via:
WayBack https://www.sourcetreeapp.com/update/windowsupdates.txt
Similar to Downgrading to SourceTree 1.5.x from 1.6.x, but keeping up with the youngest embedded Git and Mercurial.
–jeroen