The phrase "got one hair" is often used to describe a person or situation where there is only one tiny flaw or issue. There are several synonyms that can be used instead of this phrase, depending on the specific context and tone of the conversation. These include "minor snag," "small inconvenience," "slight hitch," "tiny imperfection," "minor setback," "little blemish," and "small hiccup." Using such synonyms can help to make a conversation more engaging and less repetitive, while still conveying the same message of a small issue or mistake.