tools roll-release: Bump branchLegacyCutoff to M96

The tool was getting slow, due to the number of branches being examined.
M96 is the latest stable release. We aren't applying fixes to this or older branches.

Also avoids an issue where the M95 branch was missing a cherry-pick, which the tool wanted to merge with each run.

Change-Id: I8a8b1466c10633d9539725cd4f9b1b0514e41e93
Auto-Submit: Ben Clayton <>
Kokoro: Kokoro <>
Reviewed-by: James Price <>
Commit-Queue: James Price <>
diff --git a/docs/ b/docs/
index 67ba97e..c4a3f1a 100644
--- a/docs/
+++ b/docs/
@@ -62,6 +62,7 @@
 * Swizzling of `vec3` types in `storage` and `uniform` buffers has been fixed for Metal 1.x. [tint:1249](
 * Calling a function that returns an unused value no longer produces an FXC compilation error. [tint:1259](
+* `abs()` fixed for unsigned integers on SPIR-V backend
 ## Changes for M95
@@ -74,4 +75,3 @@
 * Hex floats: now correctly errors when the magnitude is non-zero, and the exponent would cause overflow. [tint:1150](, [tint:1166](
 * Identifiers beginning with an underscore are now correctly rejected.  [tint:1179](
-* `abs()` fixed for unsigned integers on SPIR-V backend
diff --git a/tools/src/cmd/roll-release/main.go b/tools/src/cmd/roll-release/main.go
index 1169d3f..a727130 100644
--- a/tools/src/cmd/roll-release/main.go
+++ b/tools/src/cmd/roll-release/main.go
@@ -49,7 +49,7 @@
 	dawnURL             = ""
 	tintSubdirInDawn    = "third_party/tint"
 	branchPrefix        = "chromium/"
-	branchLegacyCutoff  = 4590 // Branch numbers < than this are ignored
+	branchLegacyCutoff  = 4664 // Branch numbers < than this are ignored
 type branches = map[string]plumbing.Hash