[CI] Bypass runner git-cache rewrite in sglang/vllm nightlies (#1090)

Author: coderfeli

.github/workflows/flydsl-sglang-integration.yaml

@@ -61,17 +61,28 @@ jobs:
 
     env:
       GPU_ARCH: gfx950
+      # Keep checkout independent of runner-local git-cache rewrites.
+      GIT_CONFIG_GLOBAL: /dev/null
+      GIT_CONFIG_NOSYSTEM: "1"
 
     steps:
       - name: Checkout FlyDSL utility scripts
         uses: actions/checkout@v4
+        env:
+          # Keep checkout independent of runner-local git-cache rewrites.
+          GIT_CONFIG_GLOBAL: ${{ runner.temp }}/flydsl-gitconfig
+          GIT_CONFIG_NOSYSTEM: "1"
         with:
           sparse-checkout: |
             scripts/install_awscli.sh
           path: flydsl
 
       - name: Checkout aiter downstream script
         uses: actions/checkout@v4
+        env:
+          # Keep checkout independent of runner-local git-cache rewrites.
+          GIT_CONFIG_GLOBAL: ${{ runner.temp }}/flydsl-gitconfig
+          GIT_CONFIG_NOSYSTEM: "1"
         with:
           repository: ${{ env.AITER_REPOSITORY }}
           ref: ${{ env.AITER_REF }}

.github/workflows/flydsl-vllm-integration.yaml

@@ -25,9 +25,17 @@ jobs:
     runs-on: build-only-flydsl
     permissions:
       contents: read
+    env:
+      # Keep checkout independent of runner-local git-cache rewrites.
+      GIT_CONFIG_GLOBAL: /dev/null
+      GIT_CONFIG_NOSYSTEM: "1"
     steps:
       - name: Checkout upstream aiter repo
         uses: actions/checkout@v4
+        env:
+          # Keep checkout independent of runner-local git-cache rewrites.
+          GIT_CONFIG_GLOBAL: ${{ runner.temp }}/flydsl-gitconfig
+          GIT_CONFIG_NOSYSTEM: "1"
         with:
           repository: ${{ env.AITER_REPOSITORY }}
           ref: ${{ env.AITER_REF }}
@@ -115,16 +123,29 @@ jobs:
             extra_args: --block-size 1 --trust-remote-code
             extra_env_args: -e VLLM_USE_TRITON_FLASH_ATTN=0
 
+    env:
+      # Keep checkout independent of runner-local git-cache rewrites.
+      GIT_CONFIG_GLOBAL: /dev/null
+      GIT_CONFIG_NOSYSTEM: "1"
+
     steps:
       - name: Checkout FlyDSL utility scripts
         uses: actions/checkout@v4
+        env:
+          # Keep checkout independent of runner-local git-cache rewrites.
+          GIT_CONFIG_GLOBAL: ${{ runner.temp }}/flydsl-gitconfig
+          GIT_CONFIG_NOSYSTEM: "1"
         with:
           sparse-checkout: |
             scripts/install_awscli.sh
           path: flydsl
 
       - name: Checkout aiter helper script
         uses: actions/checkout@v4
+        env:
+          # Keep checkout independent of runner-local git-cache rewrites.
+          GIT_CONFIG_GLOBAL: ${{ runner.temp }}/flydsl-gitconfig
+          GIT_CONFIG_NOSYSTEM: "1"
         with:
           repository: ${{ env.AITER_REPOSITORY }}
           ref: ${{ env.AITER_REF }}