Function find_first_commit

tools/repo_creater/create_repo.py:65–74

(graph)

def find_first_commit(graph):
    first = None
    for n in graph.nodes():
        if graph.in_degree(n) == 0:
            if first is None:
                first = n
            else:
                print("Multiple starting nodes is not supported.")
                sys.exit()
    return first


def depth_first_traverse(graph, first_commit):