diff --git a/taskcluster/ci/fetch/toolchains.yml b/taskcluster/ci/fetch/toolchains.yml
index c3a8bb40f33b..60057858460d 100644
--- a/taskcluster/ci/fetch/toolchains.yml
+++ b/taskcluster/ci/fetch/toolchains.yml
@@ -490,6 +490,7 @@ rust-1.56.0-dev:
     description: Rust 1.56.0-dev source code
     fetch:
         type: git
+        include-dot-git: true
         repo: https://github.com/rust-lang/rust/
         revision: d9aa28767287670df6cf823b94629122e04442c0
 
diff --git a/taskcluster/scripts/misc/repack_rust.py b/taskcluster/scripts/misc/repack_rust.py
index 4d9d48964403..f0f570fd0ace 100755
--- a/taskcluster/scripts/misc/repack_rust.py
+++ b/taskcluster/scripts/misc/repack_rust.py
@@ -398,6 +398,9 @@ def build_src(install_dir, host, targets, patches):
         extended = true
         tools = ["analysis", "cargo", "rustfmt", "clippy", "src"]
 
+        [rust]
+        ignore-git = false
+
         [install]
         prefix = "{prefix}"
         sysconfdir = "etc"