diff --git a/src/Fable.Cli/CHANGELOG.md b/src/Fable.Cli/CHANGELOG.md
index ecbd7a77e7..8184976896 100644
--- a/src/Fable.Cli/CHANGELOG.md
+++ b/src/Fable.Cli/CHANGELOG.md
@@ -14,6 +14,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 * Fixed function composition types (by @ncave)
 * [GH-3668](https://github.com/fable-compiler/Fable/pull/3668) Normalize fable-library argument (by @nojaf)
 * [GH-3682](https://github.com/fable-compiler/Fable/pull/3682) Support some custom unary math operors (Acos, Asin, Atan, Atan2, Cos, Cosh, Exp, Log, Log2, Log10, Sin, Sinh, Sqrt, Tan, Tanh) (by @PierreYvesR)
+* [GH-3603](https://github.com/fable-compiler/Fable/issues/3603) Port back fixes for missing `.gitignore` file in the generated `fable_modules/` folder (by @MangelMaxime)
 
 #### Javascript
 
diff --git a/src/Fable.Compiler/ProjectCracker.fs b/src/Fable.Compiler/ProjectCracker.fs
index 55b46d2b34..d576d11954 100644
--- a/src/Fable.Compiler/ProjectCracker.fs
+++ b/src/Fable.Compiler/ProjectCracker.fs
@@ -43,13 +43,13 @@ type CacheInfo =
     }
 
     static member GetPath(fableModulesDir: string, isDebug: bool) =
-        IO.Path.Combine(
-            fableModulesDir,
-            $"""project_cracked{if isDebug then
-                                    "_debug"
-                                else
-                                    ""}.json"""
-        )
+        let suffix =
+            if isDebug then
+                "_debug"
+            else
+                ""
+
+        IO.Path.Combine(fableModulesDir, $"project_cracked%s{suffix}.json")
 
     member this.GetTimestamp() =
         CacheInfo.GetPath(this.FableModulesDir, this.FableOptions.DebugMode)
@@ -173,6 +173,17 @@ type CrackerOptions(cliArgs: CliArgs) =
 
         fableModulesDir
 
+    member _.ResetFableModulesDir() =
+        if IO.Directory.Exists(fableModulesDir) then
+            IO.Directory.Delete(fableModulesDir, recursive = true)
+
+        IO.Directory.CreateDirectory(fableModulesDir) |> ignore
+
+        IO.File.WriteAllText(
+            IO.Path.Combine(fableModulesDir, ".gitignore"),
+            "**/*"
+        )
+
 type CrackerResponse =
     {
         FableLibDir: string
@@ -1196,8 +1207,7 @@ let getFullProjectOpts (opts: CrackerOptions) =
 
         // The cache was considered outdated / invalid so it is better to make
         // make sure we have are in a clean state
-        if IO.Directory.Exists(opts.FableModulesDir) then
-            IO.Directory.Delete(opts.FableModulesDir, true)
+        opts.ResetFableModulesDir()
 
         let fableLibDir, pkgRefs =
             match opts.FableOptions.Language with