Upstream is a subversion repository, this version is exported from the branch 0.9 located here:
SVN URL: https://free-astro.org/svn/siril/branches/0.9

Information about svn revisions that are used to create a version can be found
on the website: https://free-astro.org/index.php/Siril
Beta was 671, RC1 is 737, 0.9.0 is 1037, 0.9.1 is 1071, 0.9.2 is 1291, 0.9.3 is 1323, 0.9.4~beta1 is 1465, 0.9.4 is 1496, 0.9.5 is 1646, 0.9.6 is 1774.
