What's Changed

Fix various version-related CI breakages by @EliahKagan in #1987
Do some CI cleanup to make reports clearer and future changes easier by @EliahKagan in #1989
Affirm that gitdb and smmap advisories can also be created by @EliahKagan in #1991
Fix links to gitdb and smmap SECURITY.md files by @EliahKagan in #1992
Test Python 3.13 regularly on Ubuntu and macOS on CI by @EliahKagan in #1990
Repo.rev_parse: Handle ^{commit} correctly by @flichtenheld in #1996
Fuzzing: Fix Broken Fuzz Test for Git Submodule Handling by @DaveLak in #1997
Work around Cygwin CI failure #2004, except for test_installation by @EliahKagan in #2007
Mark test_installation xfail on Cygwin CI by @EliahKagan in #2009
IndexFile._to_relative_path - fix case where absolute path gets stripped of trailing slash by @kamilkozik7 in #2012
Use WSL1 on CI by @EliahKagan in #2010
Test free-threaded Python (but only on Linux) by @EliahKagan in #2011
Use property decorator to support typing by @Andrej730 in #2015
Fix some incorrect sphinx markups in the docstrings by @koyuki7w in #2018
replace quansight-labs/setup-python with actions/setup-python by @ngoldbaum in #2019
remove type assertions from util.py by @gcmarx in #2028
correctly handle uname-cmd that doesn't point to an executable file by @gcmarx in #2026
Use newer ruff style by @EliahKagan in #2031
Have CodeQL scan GitHub Actions workflows as well as Python code by @EliahKagan in #2032
Specify explicit contents: read workflow permissions by @EliahKagan in #2033
Fix GitConfigParser not removing quotes from values by @betaboon in #2035
Preserve quoted leading and trailing single-line config var whitespace by @EliahKagan in #2036
Refactor Git.{AutoInterrupt,CatFileContentStream} nesting by @EliahKagan in #2037
Fix Git.{AutoInterrupt,CatFileContentStream} static typing by @EliahKagan in #2039
Fix CI mypy command on free-threaded Python by @EliahKagan in #2040
Split Cygwin CI into non-performance and performance test jobs by @EliahKagan in #2042
Express conditional setuptools requirement statically by @EliahKagan in #2043
Fix ambiguous _safer_popen_windows comment by @EliahKagan in #2044
Clarify USE_SHELL warning helper signature by @EliahKagan in #2045
Test ConfigParser with whitespace outside the value by @EliahKagan in #2046
Remove explicit empty "" handling in ConfigParser by @EliahKagan in #2047
Various style improvements by @EliahKagan in #2049
Don't remove quotes if \ or " are present inside by @EliahKagan in #2048
fix updating submodules with relative urls by @david0 in #2051
Run cat_file.py fixture without site customizations by @EliahKagan in #2052
Fix Cygwin installation on CI for pip by @EliahKagan in #2053
Fail test_installation on warnings, and remove deprecated license classifier by @EliahKagan in #2054
Add clearer error version for unsupported index error by @tombedor in #2055
Fix name collision by @NMertsch in #2060
Allow relative path url in submodules for submodule_update by @t-webber in #2062

New Contributors

@flichtenheld made their first contribution in #1996
@kamilkozik7 made their first contribution in #2012
@koyuki7w made their first contribution in #2018
@ngoldbaum made their first contribution in #2019
@gcmarx made their first contribution in #2028
@betaboon made their first contribution in #2035
@david0 made their first contribution in #2051
@tombedor made their first contribution in #2055
@NMertsch made their first contribution in #2060
@t-webber made their first contribution in #2062

Full Changelog: 3.1.44...3.1.45