[3.9] bpo-40548: Fix "Check for source changes (pull_request)" GH Action job (GH-21806) by miss-islington · Pull Request #21814 · python/cpython
On Git 2.28, "git diff master..." (3 dots) no longer works when
"fetch --depth=1" is used, whereas it works on Git 2.26.
Replace "..." (3 dots) with ".." (2 dots) in the "git diff" command
computing the list of modified files between the base branch and the
PR branch.
(cherry picked from commit eaa5517)
Co-authored-by: Victor Stinner vstinner@python.org