$ git clone -n https://src.fedoraproject.org/rpms/bcm283x-firmware.git /var/lib/mock/f31-build-116314-34549/root/chroot_tmpdir/scmroot/bcm283x-firmware
Cloning into '/var/lib/mock/f31-build-116314-34549/root/chroot_tmpdir/scmroot/bcm283x-firmware'...
$ git reset --hard c2020430d080a665c0748726a51c6c7f298794b9
HEAD is now at c202043 firmware 18bf532 snapshot