diff --git a/chromeos/config/env/sys-devel/llvm b/chromeos/config/env/sys-devel/llvm
index c8ca095..f3f477a 100644
--- a/chromeos/config/env/sys-devel/llvm
+++ b/chromeos/config/env/sys-devel/llvm
@@ -6,3 +6,5 @@
 cros_pre_src_prepare_filter_sanitizers() {
 	tc-is-clang && append-flags "-fno-sanitize=vptr"
 }
+
+EGIT_MASTER="main"
diff --git a/chromeos/config/env/sys-libs/libcxx b/chromeos/config/env/sys-libs/libcxx
index fc031b6..bbff30e 100644
--- a/chromeos/config/env/sys-libs/libcxx
+++ b/chromeos/config/env/sys-libs/libcxx
@@ -5,3 +5,5 @@
 cros_pre_src_prepare_enable_cxx_exceptions() {
       cros_enable_cxx_exceptions
 }
+
+EGIT_MASTER="main"
diff --git a/chromeos/config/env/sys-libs/libcxxabi b/chromeos/config/env/sys-libs/libcxxabi
index 4abc671..d8922e1 100644
--- a/chromeos/config/env/sys-libs/libcxxabi
+++ b/chromeos/config/env/sys-libs/libcxxabi
@@ -7,3 +7,5 @@
 cros_pre_src_prepare_enable_cxx_exceptions() {
 	cros_enable_cxx_exceptions
 }
+
+EGIT_MASTER="main"