diff --git a/.gitea/workflows/ci.yml b/.gitea/workflows/ci.yml
index 8eddf98..595c860 100644
--- a/.gitea/workflows/ci.yml
+++ b/.gitea/workflows/ci.yml
@@ -10,6 +10,12 @@ on:
 jobs:
   build-and-smoke:
     runs-on: ubuntu-latest
+    # This Gitea instance is served under the /git subpath, but act_runner
+    # reports GITHUB_SERVER_URL as https://octowow.st (subpath dropped), which
+    # makes actions/checkout (and API calls) build the wrong URL. Pin it.
+    # The real fix is the server's ROOT_URL = https://octowow.st/git/ (admin).
+    env:
+      GITHUB_SERVER_URL: https://octowow.st/git
     steps:
       - name: Checkout
         uses: actions/checkout@v4
diff --git a/examples/release.yml b/examples/release.yml
index 84210dd..025a75a 100644
--- a/examples/release.yml
+++ b/examples/release.yml
@@ -4,6 +4,10 @@
 #
 # Requires: Actions enabled on the repo, and a runner advertising `ubuntu-latest`
 # (or change runs-on to a label your act_runner registers).
+#
+# NOTE: octowow.st is served under the /git subpath. act_runner reports
+# GITHUB_SERVER_URL without it, breaking checkout and the release API calls, so
+# we pin GITHUB_SERVER_URL below. Drop this once the server's ROOT_URL is fixed.
 
 name: Release MPQ
 on:
@@ -14,6 +18,8 @@ on:
 jobs:
   package:
     runs-on: ubuntu-latest
+    env:
+      GITHUB_SERVER_URL: https://octowow.st/git
     steps:
       - name: Checkout
         uses: actions/checkout@v4