Fix git checkout for tag builds in Gitea Actions

- Add conditional logic to handle tag vs branch checkouts
- Tags don't exist on 'origin/tagname' so use direct checkout
- Branches can be checked out as 'origin/branchname'
- Fixes 'fatal: origin/v0.0.1 is not a commit' error

.gitea/workflows/release.yml

@@ -18,7 +18,11 @@ jobs:
           git init
           git remote add origin ${{ github.server_url }}/${{ github.repository }}.git
           git fetch origin ${{ github.ref }}
-          git checkout -b ${{ github.ref_name }} origin/${{ github.ref_name }}
+          if [[ "${{ github.ref }}" == refs/tags/* ]]; then
+            git checkout ${{ github.ref_name }}
+          else
+            git checkout -b ${{ github.ref_name }} origin/${{ github.ref_name }}
+          fi
 
       - name: Set up Go
         run: |
@@ -31,7 +35,7 @@ jobs:
         id: version
         run: |
           if [[ "${{ github.ref }}" == refs/tags/* ]]; then
-            VERSION=${GITHUB_REF#refs/tags/}
+            VERSION=${{ github.ref_name }}
           else
             VERSION=dev-${{ github.sha }}
           fi
@@ -148,7 +152,11 @@ jobs:
           git init
           git remote add origin ${{ github.server_url }}/${{ github.repository }}.git
           git fetch origin ${{ github.ref }}
-          git checkout -b ${{ github.ref_name }} origin/${{ github.ref_name }}
+          if [[ "${{ github.ref }}" == refs/tags/* ]]; then
+            git checkout ${{ github.ref_name }}
+          else
+            git checkout -b ${{ github.ref_name }} origin/${{ github.ref_name }}
+          fi
 
       - name: Set up Docker
         run: |