$ git clone -n https://src.fedoraproject.org/rpms/kwayland.git /var/lib/mock/f42-build-862442-170808/root/chroot_tmpdir/scmroot/kwayland
Cloning into '/var/lib/mock/f42-build-862442-170808/root/chroot_tmpdir/scmroot/kwayland'...
$ git fetch origin dbd1a75d04ba2944fcb9b2c90a8fc1d469a868b5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kwayland
 * [new ref]         dbd1a75d04ba2944fcb9b2c90a8fc1d469a868b5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dbd1a75 6.2.4