Change GetCommitsOptions.RefForPushedStatus to a models.Ref

This makes it easier to use the full ref in the git merge-base call, which
avoids ambiguities when there's a tag with the same name as the current branch.

This fixes a hash coloring bug in the local commits panel when there's a tag
with the same name as the checked out branch; in this case all commit hashes
that should be yellow were painted as red.

pkg/gui/controllers/helpers/sub_commits_helper.go

@@ -39,7 +39,7 @@ func (self *SubCommitsHelper) ViewSubCommits(opts ViewSubCommitsOpts) error {
 			FilterAuthor:            self.c.Modes().Filtering.GetAuthor(),
 			IncludeRebaseCommits:    false,
 			RefName:                 opts.Ref.FullRefName(),
-			RefForPushedStatus:      opts.Ref.FullRefName(),
+			RefForPushedStatus:      opts.Ref,
 			RefToShowDivergenceFrom: opts.RefToShowDivergenceFrom,
 			MainBranches:            self.c.Model().MainBranches,
 			HashPool:                self.c.Model().HashPool,