chore: add git mirror copy

pages/pipelines/hosted_agents/mac.md

@@ -35,6 +35,9 @@ Updated Xcode versions will be available one week after Apple offers them for do
 
 ### Xcode
 
+- Xcode 16.1-Beta
+- Xcode 16.0-Beta6
+- Xcode 16.0-Beta5
 - Xcode 16.0-Beta4
 - Xcode 16.0-Beta3
 - Xcode 16.0-Beta2
@@ -55,22 +58,21 @@ Updated Xcode versions will be available one week after Apple offers them for do
 - iOS 17.5-beta2
 - iOS 17.5
 - iOS 18.0-beta4
+- iOS 18.1-beta
 - watchOS 9.4
 - watchOS 10.2
 - watchOS 10.4
-- watchOS 10.5-beta2
 - watchOS 10.5
-- watchOS 11.0
+- watchOS 11.0-beta7
 - tvOS 16.4
 - tvOS 17.2
 - tvOS 17.4
-- tvOS 17.5-beta2
 - tvOS 17.5
-- tvOS 18.0
+- tvOS 18.0-beta7
 - visionOS 1.0
 - visionOS 1.1
 - visionOS 1.2
-- visionOS 2.0
+- visionOS 2.0-beta7
 
 ### Other languages and compilers
 
@@ -95,6 +97,7 @@ Updated Xcode versions will be available one week after Apple offers them for do
 - CocoaPods
 - Ant
 - Maven
+- Mint
 - Gradle
 - Carthage
 - CMake
@@ -149,3 +152,32 @@ Updated Xcode versions will be available one week after Apple offers them for do
 
 - libpq
 - GMP
+
+## Git mirror cache
+
+The Git mirror cache is a specialized type of cache volume designed to accelerate Git operation by caching the Git repository between builds. This is useful for large repositories that are slow to clone. These volumes are attached on a best-effort basis depending on their locality, expiration and current usage, and therefore, should not be relied upon as durable data storage. By default, Git mirror cache is scoped to a pipeline and is shared between all steps in the pipeline.
+
+### Enabling Git mirror cache
+
+To enable Git mirror cache for your hosted agents:
+
+1. Select **Agents** in the global navigation to access the **Clusters** page.
+1. Select the cluster in which to enable Git mirror cache.
+1. Select **Cache Storage**, then select the **Settings** tab.
+1. Select **Enable Git mirror**, then select **Save cache settings** to enable Git mirrors for the selected hosted cluster.
+
+Once enabled, the Git mirror cache will be used for all hosted jobs using Git repositories in that cluster. A separate cache volume will be created for each repository.
+
+<%= image "hosted-agents-git-mirror.png", width: 1760, height: 436, alt: "Hosted agents git mirror setting displayed in the Buildkite UI" %>
+
+### Deleting Git mirror cache
+
+Deleting a cache volume may affect the build time for the associated pipelines until the new cache is established.
+
+To delete a git mirror cache:
+
+1. Select **Agents** in the global navigation to access the **Clusters** page.
+1. Select the cluster in which to delete Git mirror cache.
+1. Select **Cache Storage**, then select the **Volumes** tab to view a list of all exiting cache volumes.
+1. Select **Delete** for the Git mirror cache volume you wish to remove.
+1. Confirm the deletion by selecting **Delete Cache Volume**.