Fix OutOfBound array access when looking for ReflogCommits

refs #679

pkg/commands/commit_list_builder.go

@@ -105,7 +105,7 @@ func (c *CommitListBuilder) GetCommits(limit bool) ([]*Commit, error) {
 	// now we can split it up and turn it into commits
 	for _, line := range utils.SplitLines(log) {
 		commit := c.extractCommitFromLine(line)
-		_, unpushed := unpushedCommits[commit.Sha]
+		_, unpushed := unpushedCommits[commit.Sha[:8]]
 		commit.Status = map[bool]string{true: "unpushed", false: "pushed"}[unpushed]
 		commits = append(commits, commit)
 	}

pkg/commands/git.go

@@ -1115,7 +1115,7 @@ func (c *GitCommand) GetReflogCommits() ([]*Commit, error) {
 	re := regexp.MustCompile(`(\w+).*HEAD@\{\d+\}: (.*)`)
 	for i, line := range lines {
 		match := re.FindStringSubmatch(line)
-		if len(match) == 1 {
+		if len(match) <= 1 {
 			continue
 		}