be written after every 'git commit' command, and overrides the
'core.commitGraph' setting to true.
-GIT_TEST_COMMIT_GRAPH_NO_GDAT=<boolean>, when true, forces the
-commit-graph to be written without generation data chunk.
-
GIT_TEST_COMMIT_GRAPH_CHANGED_PATHS=<boolean>, when true, forces
commit-graph write to compute and write changed path Bloom filters for
every 'git commit-graph write', as if the `--changed-paths` option was