ci: only report main branch in README status
diff --git a/README.md b/README.md
index e00a543..b66d190 100644
--- a/README.md
+++ b/README.md
@@ -3,7 +3,7 @@ libgit2 - the Git linkable library
| Build Status | |
| ------------ | - |
-| **master** branch CI builds | [](https://github.com/libgit2/libgit2/actions?query=workflow%3A%22CI+Build%22) |
+| **master** branch CI builds | [](https://github.com/libgit2/libgit2/actions?query=workflow%3A%22CI+Build%22+event%3Apush) |
| **v1.0 branch** CI builds | [](https://dev.azure.com/libgit2/libgit2/_build/latest?definitionId=7&branchName=maint/v1.0) |
| **v0.28 branch** CI builds | [](https://dev.azure.com/libgit2/libgit2/_build/latest?definitionId=7&branchName=maint/v0.28) |
| **Nightly** builds | [](https://github.com/libgit2/libgit2/actions?query=workflow%3A%22Nightly+Build%22) [](https://scan.coverity.com/projects/639) |