$ git clone -n https://src.fedoraproject.org/rpms/fcitx5-unikey.git /var/lib/mock/f45-build-8808-396/root/chroot_tmpdir/scmroot/fcitx5-unikey
Cloning into '/var/lib/mock/f45-build-8808-396/root/chroot_tmpdir/scmroot/fcitx5-unikey'...
$ git fetch origin a2854ddcca54590f9c968f8bf34c5e5f2166e857:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/fcitx5-unikey
 * [new ref]         a2854ddcca54590f9c968f8bf34c5e5f2166e857 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a2854dd Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild