only show commits from start ref if bad commit is reachable from there

1 files changed, 8 insertions, 0 deletions

diff --git a/pkg/commands/git_commands/bisect.go b/pkg/commands/git_commands/bisect.go
index 2e362af2a..c72eaee52 100644
--- a/pkg/commands/git_commands/bisect.go
+++ b/pkg/commands/git_commands/bisect.go
@@ -162,3 +162,11 @@ func (self *BisectCommands) IsDone() (bool, []string, error) {
 
 	return done, candidates, nil
 }
+
+func (self *BisectCommands) ReachableFromStart(ref string, startRef string) bool {
+	err := self.cmd.New(
+		fmt.Sprintf("git merge-base --is-ancestor %s %s", startRef, ref),
+	).Run()
+
+	return err == nil
+}