[PATCH 3/5] protocol-capabilities.txt: clarify "allow-x-sha1-in-want" re SHA-256

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Two of our extensions contain "sha1" in their names, but that's
historical. The "want"s will take object names that are not necessarily
SHA-1s. Make this clear, but also make it clear how there's still just
one correct hash algo: These extensions don't somehow make the "want"s
take object names derived using *any* hash algorithm.

Signed-off-by: Martin Ågren <martin.agren@xxxxxxxxx>
---
 Documentation/technical/protocol-capabilities.txt | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/Documentation/technical/protocol-capabilities.txt b/Documentation/technical/protocol-capabilities.txt
index 36ccd14f97..47f1b30090 100644
--- a/Documentation/technical/protocol-capabilities.txt
+++ b/Documentation/technical/protocol-capabilities.txt
@@ -324,15 +324,18 @@ allow-tip-sha1-in-want
 ----------------------
 
 If the upload-pack server advertises this capability, fetch-pack may
-send "want" lines with SHA-1s that exist at the server but are not
-advertised by upload-pack.
+send "want" lines with object names that exist at the server but are not
+advertised by upload-pack. (Note that the name of the capability
+contains "sha1", but that it's more general than that: in SHA-1
+repositories, the "want" lines provide SHA-1 values, but in SHA-256
+repositories, they provide SHA-256 values.)
 
 allow-reachable-sha1-in-want
 ----------------------------
 
 If the upload-pack server advertises this capability, fetch-pack may
-send "want" lines with SHA-1s that exist at the server but are not
-advertised by upload-pack.
+send "want" lines with object names that exist at the server but are not
+advertised by upload-pack. (Same remark about "sha1" as above.)
 
 push-cert=<nonce>
 -----------------
-- 
2.28.0.277.g9b3c35fffd




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