[PATCH 4/5] README: add a build badge for the GitHub Actions runs

["Johannes Schindelin via GitGitGadget" <gitgitgadget@xxxxxxxxx>]

From: Johannes Schindelin <johannes.schindelin@xxxxxx>

Signed-off-by: Johannes Schindelin <johannes.schindelin@xxxxxx>
---
 README.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/README.md b/README.md
index 9d4564c8aa1..e2e00ae2495 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,4 @@
+[![Build status](https://github.com/git/git/workflows/CI/PR/badge.svg)](https://github.com/git/git/actions?query=branch%3Amaster+event%3Apush)
 [![Build Status](https://dev.azure.com/git/git/_apis/build/status/git.git)](https://dev.azure.com/git/git/_build/latest?definitionId=11)
 
 Git - fast, scalable, distributed revision control system
-- 
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