To avoid further occurrences of T686, we should consider whether we need to prevent bogus permissions values in the database.
We need to make sure that there is only a handful of valid values, as wild git repositories can contain weird things.
(the queries to check the data are running)
softwareheritage=> select distinct(perms) from directory_entry_file;
perms
--------
33200
33248
33276
33261
100644
16877
120000
33152
32768
33188
33216
33225
33060
0
40960
295332
33268
100755
33184
33252
33272
33279
33196
33277
33189
16888
16895
33260
33256
33204
16893
41471
16832
33206
(34 rows)....