Try building Linux images again with aggressiv fetch retries

.github/workflows/build.yml

@@ -86,7 +86,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        target: [win64]
+        target: [win64,linux64]
         variant: [gpl,lgpl,gpl 4.4,lgpl 4.4,gpl-shared,lgpl-shared,gpl-shared 4.4,lgpl-shared 4.4]
     steps:
       - name: Checkout

images/base/git-mini-clone.sh

@@ -5,6 +5,18 @@ REF="$2"
 DEST="$3"
 git init "$DEST"
 git -C "$DEST" remote add origin "$REPO"
-git -C "$DEST" fetch --depth=1 origin "$REF"
+
+RETRY_COUNTER=0
+MAX_RETRY=15
+while [[ $RETRY_COUNTER -lt $MAX_RETRY ]]; do
+    timeout 120 git -C "$DEST" fetch --depth=1 origin "$REF" && break || sleep 10
+    RETRY_COUNTER=$(( $RETRY_COUNTER + 1 ))
+    echo "Retry $RETRY_COUNTER..."
+done
+if [[ $RETRY_COUNTER -ge $MAX_RETRY ]]; then
+    echo "Max retry count exceeded."
+    exit 1
+fi
+
 git -C "$DEST" config advice.detachedHead false
 git -C "$DEST" checkout FETCH_HEAD