devel/git-cinnabar: unbreak after r537899

helper/cinnabar-fast-import.c:12:10: fatal error:

'sha1-array.h' file not found

#include "sha1-array.h"

^~~~~~~~~~~~~~

In file included from helper/hg-connect-stdio.c:3:
In file included from helper/hg-connect-internal.h:4:
helper/hg-connect.h:6:10: fatal error: 'sha1-array.h' file not

found

#include "sha1-array.h"

^~~~~~~~~~~~~~

Obtained from: upstream