'read'::
-Read a graph file given by the commit-graph file and output basic
-details about the graph file. Used for debugging purposes.
+Read the commit-graph file and output basic details about it.
+Used for debugging purposes.
'verify'::
$ git commit-graph write
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-* Write a graph file, extending the current graph file using commits
- in `<pack-index>`.
+* Write a commit-graph file, extending the current commit-graph file
+ using commits in `<pack-index>`.
+
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$ echo <pack-index> | git commit-graph write --stdin-packs
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-* Write a graph file containing all reachable commits.
+* Write a commit-graph file containing all reachable commits.
+
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$ git show-ref -s | git commit-graph write --stdin-commits
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-* Write a graph file containing all commits in the current
+* Write a commit-graph file containing all commits in the current
commit-graph file along with those reachable from `HEAD`.
+
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