add helper to create consistent git process
helper function will e.g. ensure we have always
GIT_OPTIONAL_LOCKS=0
set like adviced for editor background calls
this allows to add more such stuff in the future in one central place
helper function will e.g. ensure we have always
GIT_OPTIONAL_LOCKS=0
set like adviced for editor background calls
this allows to add more such stuff in the future in one central place