$ git clone -n https://src.fedoraproject.org/rpms/firefox.git /var/lib/mock/f33-build-418842-62938/root/chroot_tmpdir/scmroot/firefox
Cloning into '/var/lib/mock/f33-build-418842-62938/root/chroot_tmpdir/scmroot/firefox'...
$ git reset --hard 851602cfe3bed54eefeaff95fb47622e4930a834
HEAD is now at 851602c Merge branch 'master' into f33