зарегистрируйте содержимое файла в рабочем дереве в индекс (Register file contents in the working tree to the index)
USING 'ASSUME UNCHANGED' BIT
Many operations in Git depend on your filesystem to have an
efficient lstat(2) implementation, so that st_mtime information
for working tree files can be cheaply checked to see if the file
contents have changed from the version recorded in the index
file. Unfortunately, some filesystems have inefficient lstat(2).
If your filesystem is one of them, you can set "assume unchanged"
bit to paths you have not changed to cause Git not to do this
check. Note that setting this bit on a path does not mean Git
will check the contents of the file to see if it has changed — it
makes Git to omit any checking and assume it has not changed.
When you make changes to working tree files, you have to
explicitly tell Git about it by dropping "assume unchanged" bit,
either before or after you modify them.
In order to set "assume unchanged" bit, use --assume-unchanged
option. To unset, use --no-assume-unchanged. To see which files
have the "assume unchanged" bit set, use git ls-files -v (see
git-ls-files(1)).
The command looks at core.ignorestat configuration variable. When
this is true, paths updated with git update-index paths... and
paths updated with other Git commands that update both index and
working tree (e.g. git apply --index, git checkout-index -u, and
git read-tree -u) are automatically marked as "assume unchanged".
Note that "assume unchanged" bit is not set if git update-index
--refresh finds the working tree file matches the index (use git
update-index --really-refresh if you want to mark them as "assume
unchanged").
