diff --git a/src/Tgstation.Server.Host/Components/Interop/TestMerge.cs b/src/Tgstation.Server.Host/Components/Interop/TestMerge.cs
index 71c21a55bc..9e8b795b53 100644
--- a/src/Tgstation.Server.Host/Components/Interop/TestMerge.cs
+++ b/src/Tgstation.Server.Host/Components/Interop/TestMerge.cs
@@ -1,4 +1,5 @@
-using System.Globalization;
+using System;
+using System.Globalization;
 using Tgstation.Server.Api.Models.Internal;
 
 namespace Tgstation.Server.Host.Components.Interop
@@ -22,14 +23,11 @@ namespace Tgstation.Server.Host.Components.Interop
 		/// Construct a <see cref="TestMerge"/>
 		/// </summary>
 		/// <param name="testMerge">The <see cref="Models.TestMerge"/> to build from</param>
-		public TestMerge(Models.TestMerge testMerge) : base(testMerge)
+		/// <param name="revision">The value of <see cref="Revision"/></param>
+		public TestMerge(Models.TestMerge testMerge, RevisionInformation revision) : base(testMerge)
 		{
 			TimeMerged = testMerge.MergedAt.Ticks.ToString(CultureInfo.InvariantCulture);
-			Revision = new RevisionInformation
-			{
-				CommitSha = testMerge.PrimaryRevisionInformation.CommitSha,
-				OriginCommitSha = testMerge.PrimaryRevisionInformation.OriginCommitSha
-			};
+			Revision = revision ?? throw new ArgumentNullException(nameof(revision));
 		}
 	}
 }
diff --git a/src/Tgstation.Server.Host/Components/Watchdog/SessionControllerFactory.cs b/src/Tgstation.Server.Host/Components/Watchdog/SessionControllerFactory.cs
index 363a068bac..d1de6c468a 100644
--- a/src/Tgstation.Server.Host/Components/Watchdog/SessionControllerFactory.cs
+++ b/src/Tgstation.Server.Host/Components/Watchdog/SessionControllerFactory.cs
@@ -147,7 +147,7 @@ namespace Tgstation.Server.Host.Components.Watchdog
 				}
 			};
 
-			interopInfo.TestMerges.AddRange(dmbProvider.CompileJob.RevisionInformation.ActiveTestMerges.Select(x => x.TestMerge).Select(x => new Interop.TestMerge(x)));
+			interopInfo.TestMerges.AddRange(dmbProvider.CompileJob.RevisionInformation.ActiveTestMerges.Select(x => x.TestMerge).Select(x => new Interop.TestMerge(x, interopInfo.Revision)));
 
 			var interopJsonFile = JsonFile("interop");