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-rw-r--r--Documentation/technical/commit-graph-format.txt9
-rw-r--r--Documentation/technical/pack-format.txt7
2 files changed, 13 insertions, 3 deletions
diff --git a/Documentation/technical/commit-graph-format.txt b/Documentation/technical/commit-graph-format.txt
index 440541045d..6ddbceba15 100644
--- a/Documentation/technical/commit-graph-format.txt
+++ b/Documentation/technical/commit-graph-format.txt
@@ -42,8 +42,13 @@ HEADER:
1-byte version number:
Currently, the only valid version is 1.
- 1-byte Hash Version (1 = SHA-1)
- We infer the hash length (H) from this value.
+ 1-byte Hash Version
+ We infer the hash length (H) from this value:
+ 1 => SHA-1
+ 2 => SHA-256
+ If the hash type does not match the repository's hash algorithm, the
+ commit-graph file should be ignored with a warning presented to the
+ user.
1-byte number (C) of "chunks"
diff --git a/Documentation/technical/pack-format.txt b/Documentation/technical/pack-format.txt
index f4c8d94f73..f96b2e605f 100644
--- a/Documentation/technical/pack-format.txt
+++ b/Documentation/technical/pack-format.txt
@@ -279,7 +279,12 @@ HEADER:
Git only writes or recognizes version 1.
1-byte Object Id Version
- Git only writes or recognizes version 1 (SHA1).
+ We infer the length of object IDs (OIDs) from this value:
+ 1 => SHA-1
+ 2 => SHA-256
+ If the hash type does not match the repository's hash algorithm,
+ the multi-pack-index file should be ignored with a warning
+ presented to the user.
1-byte number of "chunks"