diff --git a/.gitea/workflows/build-windows.yml b/.gitea/workflows/build-windows.yml
index 594bcf88c..eca62319d 100644
--- a/.gitea/workflows/build-windows.yml
+++ b/.gitea/workflows/build-windows.yml
@@ -148,6 +148,18 @@ jobs:
           Write-Host "`n== git --version =="
           git --version
 
+          # Diagnose the real reason flutter pub get says "Unable to find git in
+          # your PATH". On a self-hosted runner where the Flutter SDK at
+          # C:\tools\flutter was provisioned by a different user, git refuses to
+          # touch it with "fatal: detected dubious ownership". Flutter's tool
+          # catches that ProcessException and (misleadingly) reports it as a
+          # missing-git-on-PATH error.
+          Write-Host "`n== git ops on flutter SDK (probe for dubious ownership) =="
+          git -C 'C:\tools\flutter' rev-parse HEAD 2>&1 | Out-Host
+          Write-Host "`n== Configuring safe.directory globally for runner user =="
+          git config --global --add safe.directory '*'
+          git config --global --get-all safe.directory
+
           # Workaround: stage git.exe next to dart.exe. CreateProcessW searches
           # the calling exe's directory before PATH -- so dropping git.exe here
           # bypasses any PATH oddities the dart child may inherit from its