thodg/libgit2

diff --git a/.github/workflows/nightly.yml b/.github/workflows/nightly.yml
index 789f268..9cb5525 100644
--- a/.github/workflows/nightly.yml
+++ b/.github/workflows/nightly.yml
@@ -73,11 +73,12 @@ jobs:
           env:
             CC: clang-10
             CFLAGS: -fsanitize=memory -fsanitize-memory-track-origins=2 -fsanitize-blacklist=/home/libgit2/source/script/sanitizers.supp -fno-optimize-sibling-calls -fno-omit-frame-pointer
-            CMAKE_OPTIONS: -DCMAKE_PREFIX_PATH=/usr/local/msan -DUSE_HTTPS=mbedTLS -DUSE_SHA1=HTTPS -DREGEX_BACKEND=pcre -DDEPRECATE_HARD=ON -DUSE_BUNDLED_ZLIB=ON
+            CMAKE_OPTIONS: -DCMAKE_PREFIX_PATH=/usr/local/msan -DUSE_HTTPS=mbedTLS -DUSE_SHA1=HTTPS -DREGEX_BACKEND=pcre -DDEPRECATE_HARD=ON -DUSE_BUNDLED_ZLIB=ON -DUSE_SSH=ON
             CMAKE_GENERATOR: Ninja
             SKIP_SSH_TESTS: true
             SKIP_NEGOTIATE_TESTS: true
             ASAN_SYMBOLIZER_PATH: /usr/bin/llvm-symbolizer-10
+            UBSAN_OPTIONS: print_stacktrace=1
           os: ubuntu-latest
         - # Focal, Clang 10, OpenSSL, UndefinedBehaviorSanitizer
           container: