diff --git a/appveyor.yml b/appveyor.yml
index d70ad54b1c812..999898ff89a3b 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -207,7 +207,9 @@ test_script:
   - sh src/ci/init_repo.sh . /c/cache/rustsrc
   - set SRC=.
   - set NO_CCACHE=1
-  - sh src/ci/run.sh
+  # Try specifically using git's `sh.exe` instead of the one in PATH which is
+  # the msys64 sh.exe. Trying to debug rust-lang/rust#58160
+  - "\"C:\\Program Files\\Git\\usr\\bin\\sh.exe\" src/ci/run.sh"
 
 on_failure:
   # Dump crash log