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-rw-r--r--Documentation/technical/hash-function-transition.txt11
1 files changed, 8 insertions, 3 deletions
diff --git a/Documentation/technical/hash-function-transition.txt b/Documentation/technical/hash-function-transition.txt
index 417ba491d0..34396f13ec 100644
--- a/Documentation/technical/hash-function-transition.txt
+++ b/Documentation/technical/hash-function-transition.txt
@@ -116,10 +116,15 @@ Documentation/technical/repository-version.txt) with extensions
objectFormat = newhash
compatObjectFormat = sha1
-Specifying a repository format extension ensures that versions of Git
-not aware of NewHash do not try to operate on these repositories,
-instead producing an error message:
+The combination of setting `core.repositoryFormatVersion=1` and
+populating `extensions.*` ensures that all versions of Git later than
+`v0.99.9l` will die instead of trying to operate on the NewHash
+repository, instead producing an error message.
+ # Between v0.99.9l and v2.7.0
+ $ git status
+ fatal: Expected git repo version <= 0, found 1
+ # After v2.7.0
$ git status
fatal: unknown repository extensions found:
objectformat