That is what I think, that one must continue to repent and get better at catching one's transgressions, even if they appear to be passing evil thoughts. (I cursed my cat this morning for walking over the keyboard of my computer yet again -- and repented immediately and am exasperated at myself for continually having to repent of the same sin.) I think that praying that God will "repent us" may mean that we ask Him to make us more quickly repentant of the sins we continue to commit even as we know they are sins.
"am exasperated at myself for continually having to repent of the same sin.
Yeah, I sure am glad that never happens to me.
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Ow! Darn that lightning...