x11/grim: unbreak fetch due to Git upgrade

> Fetched file size mismatch (expected 18280, actual 18351)

> SHA256 Checksum mismatch for 89e02e663fab.patch.

-2.34.7
+2.38.4

See also: https://github.com/git/git/commit/4f4be00d302b

(cherry picked from commit a6b277b48d2b82772039711d9418d1c7b5ff7365)