This is about the shofar being blown in the temple mount. Rosh Hashanah this year falls on the Sabbath and Jews are not permitted on the temple mount on Saturdays. Hence, the petition.
Jerusalem was taken by the rebels and there is every indication that they would have blown the shofar.
Next - with the Arab conquest of Jerusalem in 623 AD, the Pharisee-Jews were allowed back into Jerusalem (or rather into Aelia Capitolina -- Jerusalem was razed to the ground) and allowed to worship and blow the shofar. The Dome of the Rock was out of bounds, but the temple mount was not