$ git clone -n https://src.fedoraproject.org/rpms/colobot.git /var/lib/mock/f39-build-1495198-34543/root/chroot_tmpdir/scmroot/colobot
Cloning into '/var/lib/mock/f39-build-1495198-34543/root/chroot_tmpdir/scmroot/colobot'...
$ git fetch origin 17848aea200d4a409fe4a2eec897e1c5397b8573:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/colobot
 * [new ref]         17848aea200d4a409fe4a2eec897e1c5397b8573 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 17848ae Update to v0.2.1