fix: add git init -b main to 28 more Dockerfile.sg_only files

sjarmak · claude · sjarmak · commit e0c046cd0ee3 · 2026-02-21T20:40:48.000Z
Previous fix (899516a) only caught 38 files with COPY repo pattern. These 28 files use git clone into subdirectories or WORKDIR, leaving the workspace without .git/ for the truncation commit step. Affected suites: ccb_build(5), ccb_design(5), ccb_fix(5), ccb_secure(1), ccb_test(12) Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
diff --git a/benchmarks/ccb_build/envoy-grpc-server-impl-001/environment/Dockerfile.sg_only b/benchmarks/ccb_build/envoy-grpc-server-impl-001/environment/Dockerfile.sg_only
@@ -41,6 +41,6 @@ RUN find /workspace -type f \( -name "*.py" -o -name "*.pyx" -o -name "*.pyi" -o
 # Recommit truncated state so git history cannot recover full files.
 # Without this, `git show HEAD:<file>` or `git checkout HEAD -- <file>`
 # would bypass truncation by reading from the pre-truncation commit.
-RUN cd /workspace && git config user.email "agent@example.com" && git config user.name "Agent" && git add -A && git commit -m "sg_only truncation" --allow-empty --quiet
+RUN cd /workspace && git init -b main && git config user.email "agent@example.com" && git config user.name "Agent" && git add -A && git commit -m "sg_only truncation" --allow-empty --quiet
 RUN touch /tmp/.sg_only_mode && echo '/workspace' > /tmp/.sg_only_workdir
 CMD ["/bin/bash"]
diff --git a/benchmarks/ccb_build/k8s-runtime-object-impl-001/environment/Dockerfile.sg_only b/benchmarks/ccb_build/k8s-runtime-object-impl-001/environment/Dockerfile.sg_only
@@ -36,6 +36,6 @@ RUN find /workspace -type f \( -name "*.py" -o -name "*.pyx" -o -name "*.pyi" -o
 # Recommit truncated state so git history cannot recover full files.
 # Without this, `git show HEAD:<file>` or `git checkout HEAD -- <file>`
 # would bypass truncation by reading from the pre-truncation commit.
-RUN cd /workspace && git config user.email "agent@example.com" && git config user.name "Agent" && git add -A && git commit -m "sg_only truncation" --allow-empty --quiet
+RUN cd /workspace && git init -b main && git config user.email "agent@example.com" && git config user.name "Agent" && git add -A && git commit -m "sg_only truncation" --allow-empty --quiet
 RUN touch /tmp/.sg_only_mode && echo '/workspace' > /tmp/.sg_only_workdir
 CMD ["/bin/bash"]
diff --git a/benchmarks/ccb_build/servo-scrollend-event-feat-001/environment/Dockerfile.sg_only b/benchmarks/ccb_build/servo-scrollend-event-feat-001/environment/Dockerfile.sg_only
@@ -35,7 +35,7 @@ RUN find /workspace -type f \( -name "*.py" -o -name "*.pyx" -o -name "*.pyi" -o
 # Recommit truncated state so git history cannot recover full files.
 # Without this, `git show HEAD:<file>` or `git checkout HEAD -- <file>`
 # would bypass truncation by reading from the pre-truncation commit.
-RUN cd /workspace && git add -A && git commit -m "sg_only truncation" --allow-empty --quiet
+RUN cd /workspace && git init -b main && git add -A && git commit -m "sg_only truncation" --allow-empty --quiet
 RUN touch /tmp/.sg_only_mode && echo '/workspace' > /tmp/.sg_only_workdir
 
 WORKDIR /workspace
diff --git a/benchmarks/ccb_build/tensorrt-mxfp4-quant-feat-001/environment/Dockerfile.sg_only b/benchmarks/ccb_build/tensorrt-mxfp4-quant-feat-001/environment/Dockerfile.sg_only
@@ -37,7 +37,7 @@ RUN find /workspace -type f \( -name "*.py" -o -name "*.pyx" -o -name "*.pyi" -o
 # Recommit truncated state so git history cannot recover full files.
 # Without this, `git show HEAD:<file>` or `git checkout HEAD -- <file>`
 # would bypass truncation by reading from the pre-truncation commit.
-RUN cd /workspace && git add -A && git commit -m "sg_only truncation" --allow-empty --quiet
+RUN cd /workspace && git init -b main && git add -A && git commit -m "sg_only truncation" --allow-empty --quiet
 RUN touch /tmp/.sg_only_mode && echo '/workspace' > /tmp/.sg_only_workdir
 
 WORKDIR /workspace
diff --git a/benchmarks/ccb_build/vscode-stale-diagnostics-feat-001/environment/Dockerfile.sg_only b/benchmarks/ccb_build/vscode-stale-diagnostics-feat-001/environment/Dockerfile.sg_only
@@ -35,7 +35,7 @@ RUN find /workspace -type f \( -name "*.py" -o -name "*.pyx" -o -name "*.pyi" -o
 # Recommit truncated state so git history cannot recover full files.
 # Without this, `git show HEAD:<file>` or `git checkout HEAD -- <file>`
 # would bypass truncation by reading from the pre-truncation commit.
-RUN cd /workspace && git add -A && git commit -m "sg_only truncation" --allow-empty --quiet
+RUN cd /workspace && git init -b main && git add -A && git commit -m "sg_only truncation" --allow-empty --quiet
 RUN touch /tmp/.sg_only_mode && echo '/workspace' > /tmp/.sg_only_workdir
 
 WORKDIR /workspace
diff --git a/benchmarks/ccb_design/envoy-routeconfig-dep-chain-001/environment/Dockerfile.sg_only b/benchmarks/ccb_design/envoy-routeconfig-dep-chain-001/environment/Dockerfile.sg_only
@@ -40,6 +40,6 @@ RUN find /workspace -type f \( -name "*.py" -o -name "*.pyx" -o -name "*.pyi" -o
 # Recommit truncated state so git history cannot recover full files.
 # Without this, `git show HEAD:<file>` or `git checkout HEAD -- <file>`
 # would bypass truncation by reading from the pre-truncation commit.
-RUN cd /workspace && git config user.email "agent@example.com" && git config user.name "Agent" && git add -A && git commit -m "sg_only truncation" --allow-empty --quiet
+RUN cd /workspace && git init -b main && git config user.email "agent@example.com" && git config user.name "Agent" && git add -A && git commit -m "sg_only truncation" --allow-empty --quiet
 RUN touch /tmp/.sg_only_mode && echo '/workspace' > /tmp/.sg_only_workdir
 CMD ["/bin/bash"]
diff --git a/benchmarks/ccb_design/envoy-stream-aggregated-sym-001/environment/Dockerfile.sg_only b/benchmarks/ccb_design/envoy-stream-aggregated-sym-001/environment/Dockerfile.sg_only
@@ -36,6 +36,6 @@ RUN find /workspace -type f \( -name "*.py" -o -name "*.pyx" -o -name "*.pyi" -o
 # Recommit truncated state so git history cannot recover full files.
 # Without this, `git show HEAD:<file>` or `git checkout HEAD -- <file>`
 # would bypass truncation by reading from the pre-truncation commit.
-RUN cd /workspace && git config user.email "agent@example.com" && git config user.name "Agent" && git add -A && git commit -m "sg_only truncation" --allow-empty --quiet
+RUN cd /workspace && git init -b main && git config user.email "agent@example.com" && git config user.name "Agent" && git add -A && git commit -m "sg_only truncation" --allow-empty --quiet
 RUN touch /tmp/.sg_only_mode && echo '/workspace' > /tmp/.sg_only_workdir
 CMD ["/bin/bash"]
diff --git a/benchmarks/ccb_design/k8s-sharedinformer-sym-001/environment/Dockerfile.sg_only b/benchmarks/ccb_design/k8s-sharedinformer-sym-001/environment/Dockerfile.sg_only
@@ -36,6 +36,6 @@ RUN find /workspace -type f \( -name "*.py" -o -name "*.pyx" -o -name "*.pyi" -o
 # Recommit truncated state so git history cannot recover full files.
 # Without this, `git show HEAD:<file>` or `git checkout HEAD -- <file>`
 # would bypass truncation by reading from the pre-truncation commit.
-RUN cd /workspace && git config user.email "agent@example.com" && git config user.name "Agent" && git add -A && git commit -m "sg_only truncation" --allow-empty --quiet
+RUN cd /workspace && git init -b main && git config user.email "agent@example.com" && git config user.name "Agent" && git add -A && git commit -m "sg_only truncation" --allow-empty --quiet
 RUN touch /tmp/.sg_only_mode && echo '/workspace' > /tmp/.sg_only_workdir
 CMD ["/bin/bash"]
diff --git a/benchmarks/ccb_design/k8s-typemeta-dep-chain-001/environment/Dockerfile.sg_only b/benchmarks/ccb_design/k8s-typemeta-dep-chain-001/environment/Dockerfile.sg_only
@@ -40,6 +40,6 @@ RUN find /workspace -type f \( -name "*.py" -o -name "*.pyx" -o -name "*.pyi" -o
 # Recommit truncated state so git history cannot recover full files.
 # Without this, `git show HEAD:<file>` or `git checkout HEAD -- <file>`
 # would bypass truncation by reading from the pre-truncation commit.
-RUN cd /workspace && git config user.email "agent@example.com" && git config user.name "Agent" && git add -A && git commit -m "sg_only truncation" --allow-empty --quiet
+RUN cd /workspace && git init -b main && git config user.email "agent@example.com" && git config user.name "Agent" && git add -A && git commit -m "sg_only truncation" --allow-empty --quiet
 RUN touch /tmp/.sg_only_mode && echo '/workspace' > /tmp/.sg_only_workdir
 CMD ["/bin/bash"]
diff --git a/benchmarks/ccb_design/terraform-provider-iface-sym-001/environment/Dockerfile.sg_only b/benchmarks/ccb_design/terraform-provider-iface-sym-001/environment/Dockerfile.sg_only
@@ -36,6 +36,6 @@ RUN find /workspace -type f \( -name "*.py" -o -name "*.pyx" -o -name "*.pyi" -o
 # Recommit truncated state so git history cannot recover full files.
 # Without this, `git show HEAD:<file>` or `git checkout HEAD -- <file>`
 # would bypass truncation by reading from the pre-truncation commit.
-RUN cd /workspace && git config user.email "agent@example.com" && git config user.name "Agent" && git add -A && git commit -m "sg_only truncation" --allow-empty --quiet
+RUN cd /workspace && git init -b main && git config user.email "agent@example.com" && git config user.name "Agent" && git add -A && git commit -m "sg_only truncation" --allow-empty --quiet
 RUN touch /tmp/.sg_only_mode && echo '/workspace' > /tmp/.sg_only_workdir
 CMD ["/bin/bash"]
diff --git a/benchmarks/ccb_fix/pytorch-cudnn-version-fix-001/environment/Dockerfile.sg_only b/benchmarks/ccb_fix/pytorch-cudnn-version-fix-001/environment/Dockerfile.sg_only
@@ -29,7 +29,7 @@ RUN find /workspace -type f \( -name "*.py" -o -name "*.pyx" -o -name "*.pyi" -o
 # Recommit truncated state so git history cannot recover full files.
 # Without this, `git show HEAD:<file>` or `git checkout HEAD -- <file>`
 # would bypass truncation by reading from the pre-truncation commit.
-RUN cd /workspace && git config user.email "agent@example.com" && git config user.name "Agent" && git add -A && git commit -m "sg_only truncation" --allow-empty --quiet
+RUN cd /workspace && git init -b main && git config user.email "agent@example.com" && git config user.name "Agent" && git add -A && git commit -m "sg_only truncation" --allow-empty --quiet
 RUN touch /tmp/.sg_only_mode && echo '/workspace' > /tmp/.sg_only_workdir
 
 WORKDIR /workspace
diff --git a/benchmarks/ccb_fix/pytorch-dynamo-keyerror-fix-001/environment/Dockerfile.sg_only b/benchmarks/ccb_fix/pytorch-dynamo-keyerror-fix-001/environment/Dockerfile.sg_only
@@ -29,7 +29,7 @@ RUN find /workspace -type f \( -name "*.py" -o -name "*.pyx" -o -name "*.pyi" -o
 # Recommit truncated state so git history cannot recover full files.
 # Without this, `git show HEAD:<file>` or `git checkout HEAD -- <file>`
 # would bypass truncation by reading from the pre-truncation commit.
-RUN cd /workspace && git config user.email "agent@example.com" && git config user.name "Agent" && git add -A && git commit -m "sg_only truncation" --allow-empty --quiet
+RUN cd /workspace && git init -b main && git config user.email "agent@example.com" && git config user.name "Agent" && git add -A && git commit -m "sg_only truncation" --allow-empty --quiet
 RUN touch /tmp/.sg_only_mode && echo '/workspace' > /tmp/.sg_only_workdir
 
 WORKDIR /workspace
diff --git a/benchmarks/ccb_fix/pytorch-release-210-fix-001/environment/Dockerfile.sg_only b/benchmarks/ccb_fix/pytorch-release-210-fix-001/environment/Dockerfile.sg_only
@@ -29,7 +29,7 @@ RUN find /workspace -type f \( -name "*.py" -o -name "*.pyx" -o -name "*.pyi" -o
 # Recommit truncated state so git history cannot recover full files.
 # Without this, `git show HEAD:<file>` or `git checkout HEAD -- <file>`
 # would bypass truncation by reading from the pre-truncation commit.
-RUN cd /workspace && git config user.email "agent@example.com" && git config user.name "Agent" && git add -A && git commit -m "sg_only truncation" --allow-empty --quiet
+RUN cd /workspace && git init -b main && git config user.email "agent@example.com" && git config user.name "Agent" && git add -A && git commit -m "sg_only truncation" --allow-empty --quiet
 RUN touch /tmp/.sg_only_mode && echo '/workspace' > /tmp/.sg_only_workdir
 
 WORKDIR /workspace
diff --git a/benchmarks/ccb_fix/pytorch-relu-gelu-fusion-fix-001/environment/Dockerfile.sg_only b/benchmarks/ccb_fix/pytorch-relu-gelu-fusion-fix-001/environment/Dockerfile.sg_only
@@ -29,7 +29,7 @@ RUN find /workspace -type f \( -name "*.py" -o -name "*.pyx" -o -name "*.pyi" -o
 # Recommit truncated state so git history cannot recover full files.
 # Without this, `git show HEAD:<file>` or `git checkout HEAD -- <file>`
 # would bypass truncation by reading from the pre-truncation commit.
-RUN cd /workspace && git config user.email "agent@example.com" && git config user.name "Agent" && git add -A && git commit -m "sg_only truncation" --allow-empty --quiet
+RUN cd /workspace && git init -b main && git config user.email "agent@example.com" && git config user.name "Agent" && git add -A && git commit -m "sg_only truncation" --allow-empty --quiet
 RUN touch /tmp/.sg_only_mode && echo '/workspace' > /tmp/.sg_only_workdir
 
 WORKDIR /workspace
diff --git a/benchmarks/ccb_fix/pytorch-tracer-graph-cleanup-fix-001/environment/Dockerfile.sg_only b/benchmarks/ccb_fix/pytorch-tracer-graph-cleanup-fix-001/environment/Dockerfile.sg_only
@@ -29,7 +29,7 @@ RUN find /workspace -type f \( -name "*.py" -o -name "*.pyx" -o -name "*.pyi" -o
 # Recommit truncated state so git history cannot recover full files.
 # Without this, `git show HEAD:<file>` or `git checkout HEAD -- <file>`
 # would bypass truncation by reading from the pre-truncation commit.
-RUN cd /workspace && git config user.email "agent@example.com" && git config user.name "Agent" && git add -A && git commit -m "sg_only truncation" --allow-empty --quiet
+RUN cd /workspace && git init -b main && git config user.email "agent@example.com" && git config user.name "Agent" && git add -A && git commit -m "sg_only truncation" --allow-empty --quiet
 RUN touch /tmp/.sg_only_mode && echo '/workspace' > /tmp/.sg_only_workdir
 
 WORKDIR /workspace
diff --git a/benchmarks/ccb_secure/flipt-degraded-context-fix-001/environment/Dockerfile.sg_only b/benchmarks/ccb_secure/flipt-degraded-context-fix-001/environment/Dockerfile.sg_only
@@ -34,7 +34,7 @@ RUN find /workspace -type f \( -name "*.py" -o -name "*.pyx" -o -name "*.pyi" -o
 # Recommit truncated state so git history cannot recover full files.
 # Without this, `git show HEAD:<file>` or `git checkout HEAD -- <file>`
 # would bypass truncation by reading from the pre-truncation commit.
-RUN cd /workspace && git add -A && git commit -m "sg_only truncation" --allow-empty --quiet
+RUN cd /workspace && git init -b main && git add -A && git commit -m "sg_only truncation" --allow-empty --quiet
 RUN touch /tmp/.sg_only_mode && echo '/workspace' > /tmp/.sg_only_workdir
 
 WORKDIR /workspace
diff --git a/benchmarks/ccb_test/aspnetcore-code-review-001/environment/Dockerfile.sg_only b/benchmarks/ccb_test/aspnetcore-code-review-001/environment/Dockerfile.sg_only
@@ -41,7 +41,7 @@ RUN find /workspace -type f \( -name "*.py" -o -name "*.pyx" -o -name "*.pyi" -o
 # Recommit truncated state so git history cannot recover full files.
 # Without this, `git show HEAD:<file>` or `git checkout HEAD -- <file>`
 # would bypass truncation by reading from the pre-truncation commit.
-RUN cd /workspace && git add -A && git commit -m "sg_only truncation" --allow-empty --quiet
+RUN cd /workspace && git init -b main && git add -A && git commit -m "sg_only truncation" --allow-empty --quiet
 RUN touch /tmp/.sg_only_mode && echo '/workspace' > /tmp/.sg_only_workdir
 
 WORKDIR /workspace
diff --git a/benchmarks/ccb_test/calcom-code-review-001/environment/Dockerfile.sg_only b/benchmarks/ccb_test/calcom-code-review-001/environment/Dockerfile.sg_only
@@ -41,7 +41,7 @@ RUN find /workspace -type f \( -name "*.py" -o -name "*.pyx" -o -name "*.pyi" -o
 # Recommit truncated state so git history cannot recover full files.
 # Without this, `git show HEAD:<file>` or `git checkout HEAD -- <file>`
 # would bypass truncation by reading from the pre-truncation commit.
-RUN cd /workspace && git add -A && git commit -m "sg_only truncation" --allow-empty --quiet
+RUN cd /workspace && git init -b main && git add -A && git commit -m "sg_only truncation" --allow-empty --quiet
 RUN touch /tmp/.sg_only_mode && echo '/workspace' > /tmp/.sg_only_workdir
 
 WORKDIR /workspace
diff --git a/benchmarks/ccb_test/curl-security-review-001/environment/Dockerfile.sg_only b/benchmarks/ccb_test/curl-security-review-001/environment/Dockerfile.sg_only
@@ -41,7 +41,7 @@ RUN find /workspace -type f \( -name "*.py" -o -name "*.pyx" -o -name "*.pyi" -o
 # Recommit truncated state so git history cannot recover full files.
 # Without this, `git show HEAD:<file>` or `git checkout HEAD -- <file>`
 # would bypass truncation by reading from the pre-truncation commit.
-RUN cd /workspace && git add -A && git commit -m "sg_only truncation" --allow-empty --quiet
+RUN cd /workspace && git init -b main && git add -A && git commit -m "sg_only truncation" --allow-empty --quiet
 RUN touch /tmp/.sg_only_mode && echo '/workspace' > /tmp/.sg_only_workdir
 
 WORKDIR /workspace
diff --git a/benchmarks/ccb_test/envoy-code-review-001/environment/Dockerfile.sg_only b/benchmarks/ccb_test/envoy-code-review-001/environment/Dockerfile.sg_only
@@ -43,7 +43,7 @@ RUN find /workspace -type f \( -name "*.py" -o -name "*.pyx" -o -name "*.pyi" -o
 # Recommit truncated state so git history cannot recover full files.
 # Without this, `git show HEAD:<file>` or `git checkout HEAD -- <file>`
 # would bypass truncation by reading from the pre-truncation commit.
-RUN cd /workspace && git add -A && git commit -m "sg_only truncation" --allow-empty --quiet
+RUN cd /workspace && git init -b main && git add -A && git commit -m "sg_only truncation" --allow-empty --quiet
 RUN touch /tmp/.sg_only_mode && echo '/workspace' > /tmp/.sg_only_workdir
 
 WORKDIR /workspace
diff --git a/benchmarks/ccb_test/ghost-code-review-001/environment/Dockerfile.sg_only b/benchmarks/ccb_test/ghost-code-review-001/environment/Dockerfile.sg_only
@@ -41,7 +41,7 @@ RUN find /workspace -type f \( -name "*.py" -o -name "*.pyx" -o -name "*.pyi" -o
 # Recommit truncated state so git history cannot recover full files.
 # Without this, `git show HEAD:<file>` or `git checkout HEAD -- <file>`
 # would bypass truncation by reading from the pre-truncation commit.
-RUN cd /workspace && git add -A && git commit -m "sg_only truncation" --allow-empty --quiet
+RUN cd /workspace && git init -b main && git add -A && git commit -m "sg_only truncation" --allow-empty --quiet
 RUN touch /tmp/.sg_only_mode && echo '/workspace' > /tmp/.sg_only_workdir
 
 WORKDIR /workspace
diff --git a/benchmarks/ccb_test/kafka-security-review-001/environment/Dockerfile.sg_only b/benchmarks/ccb_test/kafka-security-review-001/environment/Dockerfile.sg_only
@@ -38,6 +38,6 @@ RUN find /workspace -type f \( -name "*.py" -o -name "*.pyx" -o -name "*.pyi" -o
 # Recommit truncated state so git history cannot recover full files.
 # Without this, `git show HEAD:<file>` or `git checkout HEAD -- <file>`
 # would bypass truncation by reading from the pre-truncation commit.
-RUN cd /workspace && git add -A && git commit -m "sg_only truncation" --allow-empty --quiet
+RUN cd /workspace && git init -b main && git add -A && git commit -m "sg_only truncation" --allow-empty --quiet
 RUN touch /tmp/.sg_only_mode && echo '/workspace' > /tmp/.sg_only_workdir
 CMD ["/bin/bash"]
diff --git a/benchmarks/ccb_test/numpy-array-sum-perf-001/environment/Dockerfile.sg_only b/benchmarks/ccb_test/numpy-array-sum-perf-001/environment/Dockerfile.sg_only
@@ -70,6 +70,6 @@ RUN find /workspace -type f \( -name "*.py" -o -name "*.pyx" -o -name "*.pyi" -o
 # Recommit truncated state so git history cannot recover full files.
 # Without this, `git show HEAD:<file>` or `git checkout HEAD -- <file>`
 # would bypass truncation by reading from the pre-truncation commit.
-RUN cd /workspace && git config user.email "agent@example.com" && git config user.name "Agent" && git add -A && git commit -m "sg_only truncation" --allow-empty --quiet
+RUN cd /workspace && git init -b main && git config user.email "agent@example.com" && git config user.name "Agent" && git add -A && git commit -m "sg_only truncation" --allow-empty --quiet
 RUN touch /tmp/.sg_only_mode && echo '/workspace' > /tmp/.sg_only_workdir
 CMD ["/bin/bash"]
diff --git a/benchmarks/ccb_test/pandas-groupby-perf-001/environment/Dockerfile.sg_only b/benchmarks/ccb_test/pandas-groupby-perf-001/environment/Dockerfile.sg_only
@@ -71,6 +71,6 @@ RUN find /workspace -type f \( -name "*.py" -o -name "*.pyx" -o -name "*.pyi" -o
 # Recommit truncated state so git history cannot recover full files.
 # Without this, `git show HEAD:<file>` or `git checkout HEAD -- <file>`
 # would bypass truncation by reading from the pre-truncation commit.
-RUN cd /workspace && git config user.email "agent@example.com" && git config user.name "Agent" && git add -A && git commit -m "sg_only truncation" --allow-empty --quiet
+RUN cd /workspace && git init -b main && git config user.email "agent@example.com" && git config user.name "Agent" && git add -A && git commit -m "sg_only truncation" --allow-empty --quiet
 RUN touch /tmp/.sg_only_mode && echo '/workspace' > /tmp/.sg_only_workdir
 CMD ["/bin/bash"]
diff --git a/benchmarks/ccb_test/sklearn-kmeans-perf-001/environment/Dockerfile.sg_only b/benchmarks/ccb_test/sklearn-kmeans-perf-001/environment/Dockerfile.sg_only
@@ -74,6 +74,6 @@ RUN find /workspace -type f \( -name "*.py" -o -name "*.pyx" -o -name "*.pyi" -o
 # Recommit truncated state so git history cannot recover full files.
 # Without this, `git show HEAD:<file>` or `git checkout HEAD -- <file>`
 # would bypass truncation by reading from the pre-truncation commit.
-RUN cd /workspace && git config user.email "agent@example.com" && git config user.name "Agent" && git add -A && git commit -m "sg_only truncation" --allow-empty --quiet
+RUN cd /workspace && git init -b main && git config user.email "agent@example.com" && git config user.name "Agent" && git add -A && git commit -m "sg_only truncation" --allow-empty --quiet
 RUN touch /tmp/.sg_only_mode && echo '/workspace' > /tmp/.sg_only_workdir
 CMD ["/bin/bash"]
diff --git a/benchmarks/ccb_test/terraform-code-review-001/environment/Dockerfile.sg_only b/benchmarks/ccb_test/terraform-code-review-001/environment/Dockerfile.sg_only
@@ -41,7 +41,7 @@ RUN find /workspace -type f \( -name "*.py" -o -name "*.pyx" -o -name "*.pyi" -o
 # Recommit truncated state so git history cannot recover full files.
 # Without this, `git show HEAD:<file>` or `git checkout HEAD -- <file>`
 # would bypass truncation by reading from the pre-truncation commit.
-RUN cd /workspace && git add -A && git commit -m "sg_only truncation" --allow-empty --quiet
+RUN cd /workspace && git init -b main && git add -A && git commit -m "sg_only truncation" --allow-empty --quiet
 RUN touch /tmp/.sg_only_mode && echo '/workspace' > /tmp/.sg_only_workdir
 
 WORKDIR /workspace
diff --git a/benchmarks/ccb_test/test-unitgen-py-001/environment/Dockerfile.sg_only b/benchmarks/ccb_test/test-unitgen-py-001/environment/Dockerfile.sg_only
@@ -27,7 +27,7 @@ RUN find /workspace -type f \( -name "*.py" -o -name "*.pyx" -o -name "*.pyi" -o
 # Recommit truncated state so git history cannot recover full files.
 # Without this, `git show HEAD:<file>` or `git checkout HEAD -- <file>`
 # would bypass truncation by reading from the pre-truncation commit.
-RUN cd /workspace && git add -A && git commit -m "sg_only truncation" --allow-empty --quiet
+RUN cd /workspace && git init -b main && git add -A && git commit -m "sg_only truncation" --allow-empty --quiet
 RUN touch /tmp/.sg_only_mode && echo '/workspace' > /tmp/.sg_only_workdir
 
 WORKDIR /workspace
diff --git a/benchmarks/ccb_test/vscode-code-review-001/environment/Dockerfile.sg_only b/benchmarks/ccb_test/vscode-code-review-001/environment/Dockerfile.sg_only
@@ -43,7 +43,7 @@ RUN find /workspace -type f \( -name "*.py" -o -name "*.pyx" -o -name "*.pyi" -o
 # Recommit truncated state so git history cannot recover full files.
 # Without this, `git show HEAD:<file>` or `git checkout HEAD -- <file>`
 # would bypass truncation by reading from the pre-truncation commit.
-RUN cd /workspace && git add -A && git commit -m "sg_only truncation" --allow-empty --quiet
+RUN cd /workspace && git init -b main && git add -A && git commit -m "sg_only truncation" --allow-empty --quiet
 RUN touch /tmp/.sg_only_mode && echo '/workspace' > /tmp/.sg_only_workdir
 
 WORKDIR /workspace
