Use sources_non_forked folder for pathogen path, with sources_non_forked_fallback folder as fallback.

sources_non_forked/vim-gitgutter/autoload/gitgutter/debug.vim

@@ -1,109 +0,0 @@
-let s:plugin_dir  = expand('<sfile>:p:h:h:h').'/'
-let s:log_file    = s:plugin_dir.'gitgutter.log'
-let s:channel_log = s:plugin_dir.'channel.log'
-let s:new_log_session = 1
-
-
-function! gitgutter#debug#debug()
-  " Open a scratch buffer
-  vsplit __GitGutter_Debug__
-  normal! ggdG
-  setlocal buftype=nofile
-  setlocal bufhidden=delete
-  setlocal noswapfile
-
-  call s:vim_version()
-  call s:separator()
-
-  call s:git_version()
-  call s:separator()
-
-  call s:grep_version()
-  call s:separator()
-
-  call s:option('updatetime')
-endfunction
-
-
-function! s:separator()
-  call s:output('')
-endfunction
-
-function! s:vim_version()
-  redir => version_info
-    silent execute 'version'
-  redir END
-  call s:output(split(version_info, '\n')[0:2])
-endfunction
-
-function! s:git_version()
-  let v = system(g:gitgutter_git_executable.' --version')
-  call s:output( substitute(v, '\n$', '', '') )
-endfunction
-
-function! s:grep_version()
-  let v = system(g:gitgutter_grep.' --version')
-  call s:output( substitute(v, '\n$', '', '') )
-
-  let v = system(g:gitgutter_grep.' --help')
-  call s:output( substitute(v, '\%x00', '', 'g') )
-endfunction
-
-function! s:option(name)
-  if exists('+' . a:name)
-    let v = eval('&' . a:name)
-    call s:output(a:name . '=' . v)
-    " redir => output
-    "   silent execute "verbose set " . a:name . "?"
-    " redir END
-    " call s:output(a:name . '=' . output)
-  else
-    call s:output(a:name . ' [n/a]')
-  end
-endfunction
-
-function! s:output(text)
-  call append(line('$'), a:text)
-endfunction
-
-" assumes optional args are calling function's optional args
-function! gitgutter#debug#log(message, ...) abort
-  if g:gitgutter_log
-    if s:new_log_session && gitgutter#async#available()
-      if exists('*ch_logfile')
-        call ch_logfile(s:channel_log, 'w')
-      endif
-    endif
-
-    execute 'redir >> '.s:log_file
-      if s:new_log_session
-        let s:start = reltime()
-        silent echo "\n==== start log session ===="
-      endif
-
-      let elapsed = reltimestr(reltime(s:start)).' '
-      silent echo ''
-      " callers excluding this function
-      silent echo elapsed.expand('<sfile>')[:-22].':'
-      silent echo elapsed.s:format_for_log(a:message)
-      if a:0 && !empty(a:1)
-        for msg in a:000
-          silent echo elapsed.s:format_for_log(msg)
-        endfor
-      endif
-    redir END
-
-    let s:new_log_session = 0
-  endif
-endfunction
-
-function! s:format_for_log(data) abort
-  if type(a:data) == 1
-    return join(split(a:data,'\n'),"\n")
-  elseif type(a:data) == 3
-    return '['.join(a:data,"\n").']'
-  else
-    return a:data
-  endif
-endfunction
-