$ git clone -n https://src.fedoraproject.org/rpms/godot3.git /var/lib/mock/f40-build-806519-145131/root/chroot_tmpdir/scmroot/godot3
Cloning into '/var/lib/mock/f40-build-806519-145131/root/chroot_tmpdir/scmroot/godot3'...
$ git fetch origin 9388e711b5766caf214005acd9df4b362541a746:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/godot3
 * [new ref]         9388e711b5766caf214005acd9df4b362541a746 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9388e71 Rebuild for libvpx 1.14.x