$ git clone -n https://src.fedoraproject.org/rpms/wlroots.git /var/lib/mock/f41-build-838199-159593/root/chroot_tmpdir/scmroot/wlroots
Cloning into '/var/lib/mock/f41-build-838199-159593/root/chroot_tmpdir/scmroot/wlroots'...
$ git fetch origin a00f48886096c1df4a330db8927e864c4465e3a6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/wlroots
 * [new ref]         a00f48886096c1df4a330db8927e864c4465e3a6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a00f488 Update to 0.18.0 (#2297921)