fix(ci): Try explicitly specifying the ref for debian/fedora workflows

.forgejo/workflows/build-debian.yml

@@ -35,6 +35,7 @@ jobs:
         uses: actions/checkout@v6
         with:
           fetch-depth: 0
+          ref: ${{ github.ref_name }}
 
       - name: Cache Cargo registry
         uses: actions/cache@v4

.forgejo/workflows/build-fedora.yml

@@ -33,6 +33,7 @@ jobs:
         uses: actions/checkout@v6
         with:
           fetch-depth: 0
+          ref: ${{ github.ref_name }}
 
 
       - name: Cache DNF packages