diff --git a/nixos/tests/forgejo.nix b/nixos/tests/forgejo.nix
index 0f7e1585f3d3..6acd6acb50fa 100644
--- a/nixos/tests/forgejo.nix
+++ b/nixos/tests/forgejo.nix
@@ -77,6 +77,7 @@ let
         dumpFile = with nodes.server.specialisation.dump.configuration.services.forgejo.dump; "${backupDir}/${file}";
       in
       ''
+        import json
         GIT_SSH_COMMAND = "ssh -i $HOME/.ssh/privk -o StrictHostKeyChecking=no"
         REPO = "forgejo@server:test/repo"
         PRIVK = "${snakeOilPrivateKey}"
@@ -146,6 +147,11 @@ let
         client2.succeed(f"GIT_SSH_COMMAND='{GIT_SSH_COMMAND}' git clone {REPO}")
         client2.succeed('test "$(cat repo/testfile | xargs echo -n)" = "hello world"')
 
+        with subtest("Testing git protocol version=2 over ssh"):
+            git_protocol = client2.succeed(f"GIT_SSH_COMMAND='{GIT_SSH_COMMAND}' GIT_TRACE2_EVENT=true git -C repo fetch |& grep negotiated-version")
+            version = json.loads(git_protocol).get("value")
+            assert version == "2", f"git did not negotiate protocol version 2, but version {version} instead."
+
         server.wait_until_succeeds(
             'test "$(curl http://localhost:3000/api/v1/repos/test/repo/commits '
             + '-H "Accept: application/json" | jq length)" = "1"',