From 90d5e6a7c5dd34668067d0684684bfee5ebae1a0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Asbj=C3=B8rn=20Ulsberg?= <asbjorn@ulsberg.no>
Date: Tue, 8 Mar 2022 21:40:36 +0100
Subject: [PATCH] Fall back to `master` if `main` is missing

Fall back to `master` if `main` is missing. Fixes GH-2590.
---
 .../TrackReleaseBranchesVersionStrategy.cs               | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/src/GitVersion.Core/VersionCalculation/BaseVersionCalculators/TrackReleaseBranchesVersionStrategy.cs b/src/GitVersion.Core/VersionCalculation/BaseVersionCalculators/TrackReleaseBranchesVersionStrategy.cs
index f8d123eba7..2f2217c4ba 100644
--- a/src/GitVersion.Core/VersionCalculation/BaseVersionCalculators/TrackReleaseBranchesVersionStrategy.cs
+++ b/src/GitVersion.Core/VersionCalculation/BaseVersionCalculators/TrackReleaseBranchesVersionStrategy.cs
@@ -43,8 +43,13 @@ public override IEnumerable<BaseVersion> GetVersions() =>
 
     private IEnumerable<BaseVersion> MainTagsVersions()
     {
-        var main = this.repositoryStore.FindBranch(Config.MainBranchKey);
-        return main != null ? this.taggedCommitVersionStrategy.GetTaggedVersions(main, null) : Array.Empty<BaseVersion>();
+        var main = this.repositoryStore.FindBranch(Config.MainBranchKey)
+            // For compatibility reason try to find `master` if `main` cannot be found
+            ?? this.repositoryStore.FindBranch(Config.MasterBranchKey);
+
+        return main != null
+            ? this.taggedCommitVersionStrategy.GetTaggedVersions(main, null)
+            : Array.Empty<BaseVersion>();
     }
 
     private IEnumerable<BaseVersion> ReleaseBranchBaseVersions()