$ git clone -n https://src.fedoraproject.org/rpms/firefox.git /var/lib/mock/f33-build-458728-63615/root/chroot_tmpdir/scmroot/firefox
Cloning into '/var/lib/mock/f33-build-458728-63615/root/chroot_tmpdir/scmroot/firefox'...
$ git reset --hard c46938be6455f01eb62a8d8e6b2f67c1549b85be
HEAD is now at c46938b Merge branch 'master' into f33