Try and silence the ci failure on windows

CMakeModules/BuildSteps/WriteVersionHeader.cmake

@@ -41,9 +41,9 @@ if( CMAKE_MATCH_COUNT EQUAL 2 )
     set( KICAD_MINOR_VERSION "${CMAKE_MATCH_2}" )
 
     if( KICAD_MINOR_VERSION STREQUAL "99" )
-    set( KICAD_IS_NIGHTLY "1" )
+        set( KICAD_IS_NIGHTLY "1" )
     else()
-    set( KICAD_IS_NIGHTLY "0" )
+        set( KICAD_IS_NIGHTLY "0" )
     endif()
 
     set( KICAD_WIN32_RC_FILEVER_STR "${CMAKE_MATCH_1}.${CMAKE_MATCH_2}.0.${KICAD_GIT_REV}\\0" )

CMakeModules/CreateGitVersionHeader.cmake

@@ -58,7 +58,18 @@ macro( create_git_version_header _git_src_path )
     # to KiCadVersion.cmake as the revision level.
     if( _git_DESCRIBE )
         set( KICAD_VERSION "(${_git_DESCRIBE})" )
+    endif()
+
+    if( _git_REV_COUNT )
         set( KICAD_GIT_REV "${_git_REV_COUNT}" )
+
+        # Sanity check
+        if (NOT KICAD_GIT_REV MATCHES "^[0-9]+$")
+            set( KICAD_GIT_REV "0" )
+        endif ()
+    else()
+        # Incase the command failed, we can just default to 0, only a problem in CI right now
+        set( KICAD_GIT_REV "0" )
     endif()
 
 endmacro()