diff --git a/.gitignore b/.gitignore
index 9c000f7058..5d0e2f0576 100644
--- a/.gitignore
+++ b/.gitignore
@@ -21,6 +21,7 @@
 
 # Flutter repo-specific
 /bin/cache/
+/bin/mingit/
 /dev/benchmarks/mega_gallery/
 /dev/bots/.recipe_deps
 /dev/bots/android_tools/
diff --git a/bin/flutter.bat b/bin/flutter.bat
index 3240522e03..f69b277592 100644
--- a/bin/flutter.bat
+++ b/bin/flutter.bat
@@ -29,6 +29,10 @@ SET pub_cache_path=%FLUTTER_ROOT%\.pub-cache
 SET dart=%dart_sdk_path%\bin\dart.exe
 SET pub=%dart_sdk_path%\bin\pub.bat
 
+REM If available, add location of bundled mingit to PATH
+SET mingit_path=%FLUTTER_ROOT%\bin\mingit\cmd
+IF EXIST "%mingit_path%" SET PATH=%PATH%;%mingit_path%
+
 REM Test if Git is available on the Host
 where /q git || ECHO Error: Unable to find git in your PATH. && EXIT /B 1
 REM  Test if the flutter directory is a git clone, otherwise git rev-parse HEAD would fail
diff --git a/bin/internal/update_dart_sdk.ps1 b/bin/internal/update_dart_sdk.ps1
index f09a950d70..66d89ce1fb 100644
--- a/bin/internal/update_dart_sdk.ps1
+++ b/bin/internal/update_dart_sdk.ps1
@@ -51,6 +51,9 @@ Write-Host "Unzipping Dart SDK..."
 If (Get-Command 7z -errorAction SilentlyContinue) {
     # The built-in unzippers are painfully slow. Use 7-Zip, if available.
     & 7z x $dartSdkZip -o"$cachePath" -bd | Out-Null
+} ElseIf (Get-Command 7za -errorAction SilentlyContinue) {
+    # Use 7-Zip's standalone version 7za.exe, if available.
+    & 7za x $dartSdkZip -o"$cachePath" -bd | Out-Null
 } ElseIf (Get-Command Expand-Archive -errorAction SilentlyContinue) {
     # Use PowerShell's built-in unzipper, if available (requires PowerShell 5+).
     Expand-Archive $dartSdkZip -DestinationPath $cachePath