Re: [PATCH 1/1] fetch: add fetch.writeCommitGraph config setting

> From: Derrick Stolee <dstolee@microsoft.com>
> 
> The commit-graph feature is now on by default, and is being
> written during 'git gc' by default. Typically, Git only writes
> a commit-graph when a 'git gc --auto' command passes the gc.auto
> setting to actualy do work. This means that a commit-graph will
> typically fall behind the commits that are being used every day.
> 
> To stay updated with the latest commits, add a step to 'git
> fetch' to write a commit-graph after fetching new objects. The
> fetch.writeCommitGraph config setting enables writing a split
> commit-graph, so on average the cost of writing this file is
> very small. Occasionally, the commit-graph chain will collapse
> to a single level, and this could be slow for very large repos.
> 
> For additional use, adjust the default to be true when
> feature.experimental is enabled.