From e83d437e97cf2b41830ef1dbcb0d4e5fb4c3d011 Mon Sep 17 00:00:00 2001
From: Sonic-builder OSSO <sonic-builder@dev.osso.nl>
Date: Wed, 20 Nov 2024 10:08:04 +0100
Subject: [PATCH] [#47/%20869] build: (minor) frr keeps changing after build

---
 src/sonic-frr/Makefile | 28 +++++++++++++---------------
 1 file changed, 13 insertions(+), 15 deletions(-)

diff --git a/src/sonic-frr/Makefile b/src/sonic-frr/Makefile
index c7c43ccecc0e..69d62a2e7a82 100644
--- a/src/sonic-frr/Makefile
+++ b/src/sonic-frr/Makefile
@@ -13,12 +13,19 @@ export DEBEMAIL := sonicproject@googlegroups.com
 $(addprefix $(DEST)/, $(MAIN_TARGET)): $(DEST)/% :
 	# Build the package
 	pushd ./frr
-	git checkout -b $(FRR_BRANCH) origin/$(FRR_BRANCH) || git checkout $(FRR_BRANCH)
-ifeq ($(CROSS_BUILD_ENVIRON), y)
-	git reset --hard
-endif
-	stg branch --create $(STG_BRANCH) $(FRR_TAG)
+	git fetch --all
+
+	oldbranch=$$(git describe --always)
+	if ! git checkout $(FRR_BRANCH)-sonic; then
+		git checkout -b $(FRR_BRANCH)-sonic origin/$(FRR_BRANCH)
+	fi
+	git clean -xdf
+	git reset --hard origin/$(FRR_BRANCH)
+	git branch --list 'stg_temp.*' | sed -e '/^[*] /d' | xargs --no-run-if-empty git branch -D
+
+	stg branch --create $(STG_BRANCH)-sonic $(FRR_TAG)
 	stg import -s ../patch/series
+
 	gbp dch --ignore-branch --new-version=$(FRR_VERSION)-sonic-$(FRR_SUBVERSION) --dch-opt="--force-bad-version" --commit --git-author
 
 ifeq ($(CROSS_BUILD_ENVIRON), y)
@@ -26,16 +33,7 @@ ifeq ($(CROSS_BUILD_ENVIRON), y)
 else
 	dpkg-buildpackage -rfakeroot -b -us -uc -Ppkg.frr.nortrlib -j$(SONIC_CONFIG_MAKE_JOBS) --admindir $(SONIC_DPKG_ADMINDIR)
 endif
-	stg undo || true
-	git clean -xfdf
-	git checkout $(FRR_BRANCH)
-	stg branch --delete --force $(STG_BRANCH)
-	git rev-parse --short HEAD | xargs git checkout
-ifeq ($(CROSS_BUILD_ENVIRON), y)
-	git reset --hard
-endif
-	git checkout master
-	git branch -D $(FRR_BRANCH)
+	git checkout "$$oldbranch"
 	popd
 	mv $(DERIVED_TARGET) $* $(DEST)/