$ git clone -n https://src.fedoraproject.org/rpms/kwayland.git /var/lib/mock/f42-build-870805-177375/root/chroot_tmpdir/scmroot/kwayland
Cloning into '/var/lib/mock/f42-build-870805-177375/root/chroot_tmpdir/scmroot/kwayland'...
$ git fetch origin 22e0f613a0a033b40f93fc3eb24debaf5b2f52d3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kwayland
 * [new ref]         22e0f613a0a033b40f93fc3eb24debaf5b2f52d3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 22e0f61 6.3.0