$ git clone -n https://src.fedoraproject.org/rpms/ibus-libpinyin.git /var/lib/mock/f41-build-785922-13590/root/chroot_tmpdir/scmroot/ibus-libpinyin
Cloning into '/var/lib/mock/f41-build-785922-13590/root/chroot_tmpdir/scmroot/ibus-libpinyin'...
$ git fetch origin 6f4e416641a22ab2aac679cc0f0b0b247ecef557:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ibus-libpinyin
 * [new ref]         6f4e416641a22ab2aac679cc0f0b0b247ecef557 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6f4e416 Eliminate use of obsolete %patchN syntax (#2283636)