Parse a given refspec string
@param refspec a pointer to hold the refspec handle @param input the refspec string @param is_fetch is this a refspec for a fetch @return 0 if the refspec string could be parsed, -1 otherwise
See Implementation
Parse a given refspec string
@param refspec a pointer to hold the refspec handle @param input the refspec string @param is_fetch is this a refspec for a fetch @return 0 if the refspec string could be parsed, -1 otherwise