$ git clone -n https://src.fedoraproject.org/rpms/php-IDNA_Convert.git /var/lib/mock/f40-build-2631837-65819/root/chroot_tmpdir/scmroot/php-IDNA_Convert
Cloning into '/var/lib/mock/f40-build-2631837-65819/root/chroot_tmpdir/scmroot/php-IDNA_Convert'...
$ git fetch origin 3cab01a76f69e4aac1cfb8ed1042c51f28e5b45a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/php-IDNA_Convert
 * [new ref]         3cab01a76f69e4aac1cfb8ed1042c51f28e5b45a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3cab01a 4.0.2