diff --git a/backend/Testing/LexCore/Services/HgServiceTests.cs b/backend/Testing/LexCore/Services/HgServiceTests.cs
index dae6f7a4b..502b0a3b1 100644
--- a/backend/Testing/LexCore/Services/HgServiceTests.cs
+++ b/backend/Testing/LexCore/Services/HgServiceTests.cs
@@ -7,6 +7,7 @@
 using Microsoft.Extensions.Logging.Abstractions;
 using Microsoft.Extensions.Options;
 using Moq;
+using Moq.Contrib.HttpClient;
 using Shouldly;
 using Testing.Fixtures;
 
@@ -30,8 +31,16 @@ public HgServiceTests()
             HgResumableUrl = LexboxResumable,
             SendReceiveDomain = LexboxHgWeb
         };
+        var handler = new Mock<HttpMessageHandler>(MockBehavior.Strict);
+
+        // This may need to become more sophisticated if our FinishReset tests are changed to include
+        // a Mercurial repo with actual commits in it, but this is good enough at the moment.
+        var AllZeroHash = "0000000000000000000000000000000000000000";
+        handler.SetupAnyRequest().ReturnsResponse(AllZeroHash);
+
+        var mockFactory = handler.CreateClientFactory();
         _hgService = new HgService(new OptionsWrapper<HgConfig>(_hgConfig),
-            Mock.Of<IHttpClientFactory>(),
+            mockFactory,
             NullLogger<HgService>.Instance);
         CleanUpTempDir();
     }
@@ -53,9 +62,9 @@ public void DetermineProjectPrefixWorks(HgType type, string expectedUrl)
         HgService.DetermineProjectUrlPrefix(type, _hgConfig).ShouldBe(expectedUrl);
     }
 
-    // [Theory]
-    // [InlineData(".hg/important-file.bin")]
-    // [InlineData("unzip-test/.hg/important-file.bin")]
+    [Theory]
+    [InlineData(".hg/important-file.bin")]
+    [InlineData("unzip-test/.hg/important-file.bin")]
     public async Task CanFinishResetByUnZippingAnArchive(string filePath)
     {
         // arrange
@@ -98,7 +107,7 @@ private void CreateSimpleEntry(ZipArchive zipArchive, string filePath)
         fileStream.Flush();
     }
 
-    // [Fact]
+    [Fact]
     public async Task ThrowsIfNoHgFolderIsFound()
     {
         var code = "unzip-test-no-hg";
diff --git a/backend/Testing/Testing.csproj b/backend/Testing/Testing.csproj
index 57b5d8306..e72fb0a75 100644
--- a/backend/Testing/Testing.csproj
+++ b/backend/Testing/Testing.csproj
@@ -15,6 +15,7 @@
     <Choose>
         <When Condition=" '$(MercurialVersion)' == '6' ">
             <ItemGroup>
+                <PackageReference Include="Moq.Contrib.HttpClient" Version="1.4.0" />
                 <PackageReference Include="SIL.Chorus.LibChorus" Version="6.0.0-beta0046" />
                 <PackageReference Include="SIL.Chorus.Mercurial" Version="6.*" />
             </ItemGroup>