t / perf / Makefileon commit refs.h: clarify docstring for the ref_transaction_update()-related fns (fd2ce9c)
   1-include ../../config.mak
   2export GIT_TEST_OPTIONS
   3
   4all: perf
   5
   6perf: pre-clean
   7        ./run
   8
   9pre-clean:
  10        rm -rf test-results
  11
  12clean:
  13        rm -rf build "trash directory".* test-results
  14
  15.PHONY: all perf pre-clean clean