diff --git a/app/views/projects/tree/_tree_commit_column.html.haml b/app/views/projects/tree/_tree_commit_column.html.haml
index 406dccb74fb..e37fd7624be 100644
--- a/app/views/projects/tree/_tree_commit_column.html.haml
+++ b/app/views/projects/tree/_tree_commit_column.html.haml
@@ -1,2 +1,2 @@
 %span.str-truncated
-  = link_to_html commit.redacted_full_title_html, project_commit_path(@project, commit.id), class: 'tree-commit-link'
+  = link_to_html commit.redacted_full_title_html, project_commit_path(@project, commit.id), title: commit.redacted_full_title_html, class: 'tree-commit-link'
diff --git a/changelogs/unreleased/jramsay-42673-commit-tooltip.yml b/changelogs/unreleased/jramsay-42673-commit-tooltip.yml
new file mode 100644
index 00000000000..083cd1a54a0
--- /dev/null
+++ b/changelogs/unreleased/jramsay-42673-commit-tooltip.yml
@@ -0,0 +1,5 @@
+---
+title: Add commit message to commit tree anchor title
+merge_request: 22585
+author:
+type: fixed