fix fast commit

Author: tdhock

.ci/atime/tests.R

@@ -259,7 +259,7 @@ test.list <- atime::atime_test_list(
     },
     expr = data.table:::as.data.table.array(arr, na.rm=FALSE),
     Slow = "73d79edf8ff8c55163e90631072192301056e336",   # Parent of the first commit in the PR (https://github.com/Rdatatable/data.table/commit/8397dc3c993b61a07a81c786ca68c22bc589befc)
-    Fast = "653e2eee6d280335fe4be60845e037c039b66b38"),  # Last commit in the PR (https://github.com/Rdatatable/data.table/pull/7019/commits) that fixes the slow code
+    Fast = "8397dc3c993b61a07a81c786ca68c22bc589befc"),  # Commit in the PR (https://github.com/Rdatatable/data.table/pull/7019/commits) that removes inefficiency
 
     tests=extra.test.list)
 # nolint end: undesirable_operator_linter.