RevCommit commit = cb.setTreeId(treeId).setCommitter("Gabriel Roldan")
.setAuthor("Gabriel Roldan").build();
objectDb.put(commit);
SymRef head = (SymRef) geogig.command(RefParse.class).setName(Ref.HEAD).call().get();
final String currentBranch = head.getTarget();
geogig.command(UpdateRef.class).setName(currentBranch).setNewValue(commit.getId()).call();
verifyRepositoryTree(NodeRef.ROOT, treeId);
verifyTreeStructure(treeId, treeRefs);