diff --git a/.github/workflows/build-linux.yml b/.github/workflows/build-linux.yml
index 2043b82bb..bd092a640 100644
--- a/.github/workflows/build-linux.yml
+++ b/.github/workflows/build-linux.yml
@@ -122,16 +122,23 @@ jobs:
           fi
 
           echo "Tag provided: $TAG"
-          # fetch tags from origin and check
-          git fetch --tags origin
-          if git rev-parse --verify --quiet "refs/tags/$TAG" >/dev/null; then
+          # Check if tag exists locally first (from checkout)
+          if git rev-parse --verify --quiet "refs/tags/$TAG" 2>/dev/null; then
             echo "tag_provided=true" >> $GITHUB_OUTPUT
             echo "tag_exists=true" >> $GITHUB_OUTPUT
-            echo "Found tag $TAG on repo."
+            echo "Found tag $TAG locally."
           else
-            echo "tag_provided=true" >> $GITHUB_OUTPUT
-            echo "tag_exists=false" >> $GITHUB_OUTPUT
-            echo "Tag $TAG not found on repo. Will upload artifacts for manual download."
+            # Try to fetch the specific tag to avoid case-insensitive filesystem conflicts
+            echo "Tag not found locally, fetching specific tag from origin..."
+            if git fetch origin "refs/tags/$TAG:refs/tags/$TAG" 2>/dev/null; then
+              echo "tag_provided=true" >> $GITHUB_OUTPUT
+              echo "tag_exists=true" >> $GITHUB_OUTPUT
+              echo "Found and fetched tag $TAG from repo."
+            else
+              echo "tag_provided=true" >> $GITHUB_OUTPUT
+              echo "tag_exists=false" >> $GITHUB_OUTPUT
+              echo "Tag $TAG not found on repo. Will upload artifacts for manual download."
+            fi
           fi
 
       # If tag provided and exists -> attach to release (create/update release by tag)
diff --git a/.github/workflows/build-macos.yml b/.github/workflows/build-macos.yml
index 94fb6a4b3..f227e06fb 100644
--- a/.github/workflows/build-macos.yml
+++ b/.github/workflows/build-macos.yml
@@ -93,16 +93,23 @@ jobs:
           fi
 
           echo "Tag provided: $TAG"
-          # fetch tags from origin and check
-          git fetch --tags origin
-          if git rev-parse --verify --quiet "refs/tags/$TAG" >/dev/null; then
+          # Check if tag exists locally first (from checkout)
+          if git rev-parse --verify --quiet "refs/tags/$TAG" 2>/dev/null; then
             echo "tag_provided=true" >> $GITHUB_OUTPUT
             echo "tag_exists=true" >> $GITHUB_OUTPUT
-            echo "Found tag $TAG on repo."
+            echo "Found tag $TAG locally."
           else
-            echo "tag_provided=true" >> $GITHUB_OUTPUT
-            echo "tag_exists=false" >> $GITHUB_OUTPUT
-            echo "Tag $TAG not found on repo. Will upload artifacts for manual download."
+            # Try to fetch the specific tag to avoid case-insensitive filesystem conflicts
+            echo "Tag not found locally, fetching specific tag from origin..."
+            if git fetch origin "refs/tags/$TAG:refs/tags/$TAG" 2>/dev/null; then
+              echo "tag_provided=true" >> $GITHUB_OUTPUT
+              echo "tag_exists=true" >> $GITHUB_OUTPUT
+              echo "Found and fetched tag $TAG from repo."
+            else
+              echo "tag_provided=true" >> $GITHUB_OUTPUT
+              echo "tag_exists=false" >> $GITHUB_OUTPUT
+              echo "Tag $TAG not found on repo. Will upload artifacts for manual download."
+            fi
           fi
 
       # If tag provided and exists -> attach to release (create/update release by tag)
diff --git a/.github/workflows/build-windows.yml b/.github/workflows/build-windows.yml
index 00b5cb2d9..5ef2d0b15 100644
--- a/.github/workflows/build-windows.yml
+++ b/.github/workflows/build-windows.yml
@@ -105,16 +105,23 @@ jobs:
           fi
 
           echo "Tag provided: $TAG"
-          # fetch tags from origin and check
-          git fetch --tags origin
-          if git rev-parse --verify --quiet "refs/tags/$TAG" >/dev/null; then
+          # Check if tag exists locally first (from checkout)
+          if git rev-parse --verify --quiet "refs/tags/$TAG" 2>/dev/null; then
             echo "tag_provided=true" >> $GITHUB_OUTPUT
             echo "tag_exists=true" >> $GITHUB_OUTPUT
-            echo "Found tag $TAG on repo."
+            echo "Found tag $TAG locally."
           else
-            echo "tag_provided=true" >> $GITHUB_OUTPUT
-            echo "tag_exists=false" >> $GITHUB_OUTPUT
-            echo "Tag $TAG not found on repo. Will upload artifacts for manual download."
+            # Try to fetch the specific tag to avoid case-insensitive filesystem conflicts
+            echo "Tag not found locally, fetching specific tag from origin..."
+            if git fetch origin "refs/tags/$TAG:refs/tags/$TAG" 2>/dev/null; then
+              echo "tag_provided=true" >> $GITHUB_OUTPUT
+              echo "tag_exists=true" >> $GITHUB_OUTPUT
+              echo "Found and fetched tag $TAG from repo."
+            else
+              echo "tag_provided=true" >> $GITHUB_OUTPUT
+              echo "tag_exists=false" >> $GITHUB_OUTPUT
+              echo "Tag $TAG not found on repo. Will upload artifacts for manual download."
+            fi
           fi
           
       - name: Upload artifacts to GitHub Release (tag exists)