Update Git to v2.26.0

Signed-off-by: Derrick Stolee <stolee@gmail.com>

Directory.Build.props

@@ -36,8 +36,16 @@
 
     <!-- Version information -->
     <ScalarVersion>0.2.173.2</ScalarVersion>
-    <GitPackageVersion>2.20200227.1</GitPackageVersion>
+
+    <!--
+       Update the GitPackageVersion for the version that is shipped and tested with Scalar.
+       The MinimumGitVersion is intentionally lower to allow side-by-side installs of
+       VFS for Git (which is less flexible). Only update that version if we rely upon a
+       new command-line interface in Git or if there is a truly broken interaction.
+    -->
+    <GitPackageVersion>2.20200323.8</GitPackageVersion>
     <MinimumGitVersion>v2.25.0.vfs.1.1</MinimumGitVersion>
+
     <WatchmanPackageUrl>https://github.com/facebook/watchman/suites/307436006/artifacts/304557</WatchmanPackageUrl>
     <GcmCoreOSXPackageUrl>https://github.com/microsoft/Git-Credential-Manager-Core/releases/download/v2.0.79-beta/gcmcore-osx-2.0.79.64449.pkg</GcmCoreOSXPackageUrl>