Complete Gitea wrapper host resolution

packages/mosaic/framework/tools/git/detect-platform.sh

@@ -248,6 +248,31 @@ get_gitea_login_for_repo_override() {
     return 1
 }
 
+get_host_from_url() {
+    local url="${1:-}"
+    [[ -n "$url" ]] || return 1
+
+    python3 - "$url" <<'PY'
+import sys
+from urllib.parse import urlparse
+
+parsed = urlparse(sys.argv[1])
+if parsed.hostname:
+    print(parsed.hostname)
+    raise SystemExit(0)
+raise SystemExit(1)
+PY
+}
+
+get_gitea_api_host_for_repo_override() {
+    if [[ -n "${GITEA_HOST:-}" ]]; then
+        echo "$GITEA_HOST"
+        return 0
+    fi
+
+    get_host_from_url "${GITEA_URL:-}"
+}
+
 get_gitea_repo_args() {
     local repo host login
     repo=$(get_repo_slug) || return 1