$ git clone -n https://src.fedoraproject.org/rpms/fcitx-qt5.git /var/lib/mock/f41-build-847254-163867/root/chroot_tmpdir/scmroot/fcitx-qt5
Cloning into '/var/lib/mock/f41-build-847254-163867/root/chroot_tmpdir/scmroot/fcitx-qt5'...
$ git fetch origin 3c414a03bd86eb2ff303580961d13ad906402ae7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/fcitx-qt5
 * [new ref]         3c414a03bd86eb2ff303580961d13ad906402ae7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3c414a0 Rebuild (qt5)