diff --git a/internal/repository/prune.go b/internal/repository/prune.go
index 66eab28b2..712986e61 100644
--- a/internal/repository/prune.go
+++ b/internal/repository/prune.go
@@ -313,7 +313,7 @@ func packInfoFromIndex(ctx context.Context, idx restic.ListBlobser, usedBlobs re
 	return usedBlobs, indexPack, nil
 }
 
-func decidePackAction(ctx context.Context, opts PruneOptions, repo restic.Repository, indexPack map[restic.ID]packInfo, stats *PruneStats, printer progress.Printer) (PrunePlan, error) {
+func decidePackAction(ctx context.Context, opts PruneOptions, repo *Repository, indexPack map[restic.ID]packInfo, stats *PruneStats, printer progress.Printer) (PrunePlan, error) {
 	removePacksFirst := restic.NewIDSet()
 	removePacks := restic.NewIDSet()
 	repackPacks := restic.NewIDSet()
@@ -322,10 +322,10 @@ func decidePackAction(ctx context.Context, opts PruneOptions, repo restic.Reposi
 	var repackSmallCandidates []packInfoWithID
 	repoVersion := repo.Config().Version
 	// only repack very small files by default
-	targetPackSize := repo.PackSize() / 25
+	targetPackSize := repo.packSize() / 25
 	if opts.RepackSmall {
 		// consider files with at least 80% of the target size as large enough
-		targetPackSize = repo.PackSize() / 5 * 4
+		targetPackSize = repo.packSize() / 5 * 4
 	}
 
 	// loop over all packs and decide what to do
@@ -612,7 +612,7 @@ func (plan *PrunePlan) Execute(ctx context.Context, printer progress.Printer) (e
 	}
 
 	// drop outdated in-memory index
-	repo.ClearIndex()
+	repo.clearIndex()
 
 	printer.P("done\n")
 	return nil
diff --git a/internal/repository/repair_index.go b/internal/repository/repair_index.go
index a7d94fcf8..c20641d50 100644
--- a/internal/repository/repair_index.go
+++ b/internal/repository/repair_index.go
@@ -107,7 +107,7 @@ func RepairIndex(ctx context.Context, repo *Repository, opts RepairIndexOptions,
 	}
 
 	// drop outdated in-memory index
-	repo.ClearIndex()
+	repo.clearIndex()
 	return nil
 }
 
diff --git a/internal/repository/repository.go b/internal/repository/repository.go
index 4aa8106ab..48bb9a0ad 100644
--- a/internal/repository/repository.go
+++ b/internal/repository/repository.go
@@ -146,8 +146,8 @@ func (r *Repository) Config() restic.Config {
 	return r.cfg
 }
 
-// PackSize return the target size of a pack file when uploading
-func (r *Repository) PackSize() uint {
+// packSize return the target size of a pack file when uploading
+func (r *Repository) packSize() uint {
 	return r.opts.PackSize
 }
 
@@ -541,8 +541,8 @@ func (r *Repository) StartPackUploader(ctx context.Context, wg *errgroup.Group)
 	innerWg, ctx := errgroup.WithContext(ctx)
 	r.packerWg = innerWg
 	r.uploader = newPackerUploader(ctx, innerWg, r, r.be.Connections())
-	r.treePM = newPackerManager(r.key, restic.TreeBlob, r.PackSize(), r.uploader.QueuePacker)
-	r.dataPM = newPackerManager(r.key, restic.DataBlob, r.PackSize(), r.uploader.QueuePacker)
+	r.treePM = newPackerManager(r.key, restic.TreeBlob, r.packSize(), r.uploader.QueuePacker)
+	r.dataPM = newPackerManager(r.key, restic.DataBlob, r.packSize(), r.uploader.QueuePacker)
 
 	wg.Go(func() error {
 		return innerWg.Wait()
@@ -612,7 +612,7 @@ func (r *Repository) SetIndex(i restic.MasterIndex) error {
 	return r.prepareCache()
 }
 
-func (r *Repository) ClearIndex() {
+func (r *Repository) clearIndex() {
 	r.idx = index.NewMasterIndex()
 	r.configureIndex()
 }
@@ -646,7 +646,7 @@ func (r *Repository) LoadIndex(ctx context.Context, p *progress.Counter) error {
 	}
 
 	// reset in-memory index before loading it from the repository
-	r.ClearIndex()
+	r.clearIndex()
 
 	err = index.ForAllIndexes(ctx, indexList, r, func(_ restic.ID, idx *index.Index, _ bool, err error) error {
 		if err != nil {
diff --git a/internal/restic/repository.go b/internal/restic/repository.go
index ee32beb7e..06344a630 100644
--- a/internal/restic/repository.go
+++ b/internal/restic/repository.go
@@ -19,11 +19,9 @@ type Repository interface {
 	// Connections returns the maximum number of concurrent backend operations
 	Connections() uint
 	Config() Config
-	PackSize() uint
 	Key() *crypto.Key
 
 	LoadIndex(context.Context, *progress.Counter) error
-	ClearIndex()
 	SetIndex(MasterIndex) error
 	SaveIndex(ctx context.Context, excludePacks IDSet, extraObsolete IDs, opts MasterIndexSaveOpts) error