diff --git a/.gitea/workflows/build.yml b/.gitea/workflows/build.yml
index dc5d4f1b9b..89e87713bf 100644
--- a/.gitea/workflows/build.yml
+++ b/.gitea/workflows/build.yml
@@ -51,7 +51,9 @@ jobs:
         run: npm install -g pnpm
 
       - name: Install dependencies
-        run: make deps-frontend deps-backend
+        run: |
+          go clean -modcache
+          make deps-frontend deps-backend
 
       - name: Run Go linter
         run: make lint-go
@@ -83,7 +85,9 @@ jobs:
           cache: false
 
       - name: Install dependencies
-        run: go mod download
+        run: |
+          go clean -modcache
+          go mod download
 
       - name: Run unit tests
         run: |
@@ -140,7 +144,9 @@ jobs:
         run: npm install -g pnpm
 
       - name: Install dependencies
-        run: make deps-frontend deps-backend
+        run: |
+          go clean -modcache
+          make deps-frontend deps-backend
 
       - name: Build frontend
         run: make frontend
@@ -378,12 +384,15 @@ jobs:
 
       - name: Install dependencies (Unix)
         if: matrix.goos != 'windows'
-        run: make deps-frontend deps-backend
+        run: |
+          go clean -modcache
+          make deps-frontend deps-backend
 
       - name: Install dependencies (Windows)
         if: matrix.goos == 'windows'
         shell: pwsh
         run: |
+          go clean -modcache
           go mod download
           pnpm install
 
@@ -634,6 +643,7 @@ jobs:
 
       - name: Install dependencies
         run: |
+          /usr/local/go/bin/go clean -modcache
           /usr/local/go/bin/go mod download
           pnpm install
 
diff --git a/go.mod b/go.mod
index 3f1f567e3e..800dc455ba 100644
--- a/go.mod
+++ b/go.mod
@@ -326,6 +326,9 @@ replace github.com/go-ini/ini => github.com/go-ini/ini v1.66.6
 // Use GitCaddy fork with capability support
 replace code.gitea.io/actions-proto-go => git.marketally.com/gitcaddy/actions-proto-go v0.5.8
 
+// Mirror of deleted github.com/hexops/gotextdiff
+replace github.com/hexops/gotextdiff => git.marketally.com/mirrors/gotextdiff v1.0.3
+
 // Vault plugin - use local directory for development
 replace git.marketally.com/gitcaddy/gitcaddy-vault => ../gitcaddy-vault
 
diff --git a/go.sum b/go.sum
index c93136604a..bf06b0bcf0 100644
--- a/go.sum
+++ b/go.sum
@@ -31,6 +31,8 @@ filippo.io/edwards25519 v1.1.0 h1:FNf4tywRC1HmFuKW5xopWpigGjJKiJSV0Cqo0cJWDaA=
 filippo.io/edwards25519 v1.1.0/go.mod h1:BxyFTGdWcka3PhytdK4V28tE5sGfRvvvRV7EaN4VDT4=
 git.marketally.com/gitcaddy/actions-proto-go v0.5.8 h1:MBipeHvY6A0jcobvziUtzgatZTrV4fs/HE1rPQxREN4=
 git.marketally.com/gitcaddy/actions-proto-go v0.5.8/go.mod h1:RPu21UoRD3zSAujoZR6LJwuVNa2uFRBveadslczCRfQ=
+git.marketally.com/mirrors/gotextdiff v1.0.3 h1:Mxf+YurdCHT4y1GNiZCTDWYtVXSxhlLUeG7g7i9Za70=
+git.marketally.com/mirrors/gotextdiff v1.0.3/go.mod h1:pSWU5MAI3yDq+fZBTazCSJysOMbxWL1BSow5/V2vxeg=
 gitea.com/gitea/act v0.261.7-0.20251003180512-ac6e4b751763 h1:ohdxegvslDEllZmRNDqpKun6L4Oq81jNdEDtGgHEV2c=
 gitea.com/gitea/act v0.261.7-0.20251003180512-ac6e4b751763/go.mod h1:Pg5C9kQY1CEA3QjthjhlrqOC/QOT5NyWNjOjRHw23Ok=
 gitea.com/gitea/go-xsd-duration v0.0.0-20220703122237-02e73435a078 h1:BAFmdZpRW7zMQZQDClaCWobRj9uL1MR3MzpCVJvc5s4=
@@ -490,8 +492,6 @@ github.com/hashicorp/golang-lru/v2 v2.0.7 h1:a+bsQ5rvGLjzHuww6tVxozPZFVghXaHOwFs
 github.com/hashicorp/golang-lru/v2 v2.0.7/go.mod h1:QeFd9opnmA6QUJc5vARoKUSoFhyfM2/ZepoAG6RGpeM=
 github.com/hashicorp/hcl v1.0.0 h1:0Anlzjpi4vEasTeNFn2mLJgTSwt0+6sfsiTG8qcWGx4=
 github.com/hashicorp/hcl v1.0.0/go.mod h1:E5yfLk+7swimpb2L/Alb/PJmXilQ/rhwaUYs4T20WEQ=
-github.com/hexops/gotextdiff v1.0.3 h1:gitA9+qJrrTCsiCl7+kh75nPqQt1cx4ZkudSTLoUqJM=
-github.com/hexops/gotextdiff v1.0.3/go.mod h1:pSWU5MAI3yDq+fZBTazCSJysOMbxWL1BSow5/V2vxeg=
 github.com/hpcloud/tail v1.0.0/go.mod h1:ab1qPbhIpdTxEkNHXyeSf5vhxWSCs/tWer42PpOxQnU=
 github.com/huandu/xstrings v1.5.0 h1:2ag3IFq9ZDANvthTwTiqSSZLjDc+BedvHPAp5tJy2TI=
 github.com/huandu/xstrings v1.5.0/go.mod h1:y5/lhBue+AyNmUVz9RLU9xbLR0o4KIIExikq4ovT0aE=