Make TDLib workflow handle arbitrary refs

.gitea/workflows/build-tdlib.yaml

@@ -59,6 +59,7 @@ jobs:
 
           version="$ref"
           version="${version#v}"
+          version="${version//\//-}"
           archive="tdlib-${version}-linux-x86_64.tar.gz"
 
           {
@@ -75,7 +76,22 @@ jobs:
           archive="${{ steps.tdlib.outputs.archive }}"
 
           rm -rf tdlib-src tdlib-build dist
-          git clone --depth 1 --branch "$ref" "$TDLIB_REPO" tdlib-src
+          git init tdlib-src
+          cd tdlib-src
+          git remote add origin "$TDLIB_REPO"
+          git fetch --depth 1 origin \
+            "refs/tags/${ref}:refs/tags/${ref}" \
+            "refs/heads/${ref}:refs/remotes/origin/${ref}" || true
+
+          if git rev-parse --verify --quiet "refs/tags/${ref}" >/dev/null; then
+            git checkout --detach "refs/tags/${ref}"
+          elif git rev-parse --verify --quiet "refs/remotes/origin/${ref}" >/dev/null; then
+            git checkout --detach "refs/remotes/origin/${ref}"
+          else
+            git fetch --depth 1 origin "$ref"
+            git checkout --detach FETCH_HEAD
+          fi
+          cd ..
 
           cmake -S tdlib-src -B tdlib-build \
             -DCMAKE_BUILD_TYPE=Release \