diff --git a/doc/forum/Alternative_to_git_annex_copy_which_is_as_fast_as_git_annex_get/comment_5_0630abbcb27e1f9dc5e9269b09a99b09._comment b/doc/forum/Alternative_to_git_annex_copy_which_is_as_fast_as_git_annex_get/comment_5_0630abbcb27e1f9dc5e9269b09a99b09._comment
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+[[!comment format=mdwn
+ username="joey"
+ subject="""comment 5"""
+ date="2017-09-29T20:23:21Z"
+ content="""
+The behavior is different when the remote repository is on the USB drive,
+because git-annex knows it can quickly check if the remote really contains
+a file, and so it always checks it, even with --fast.
+
+I'm not sure if you're actually seeing a significant speed difference, or
+are psycholicically feeling it's slower since it outputs more. Perhaps you
+should time it.
+"""]]