$ git clone -n https://src.fedoraproject.org/rpms/firefox.git /var/lib/mock/f33-build-174243-44306/root/chroot_tmpdir/scmroot/firefox
Cloning into '/var/lib/mock/f33-build-174243-44306/root/chroot_tmpdir/scmroot/firefox'...
$ git reset --hard 57e3477f3fe93d1de64e2766474938e398e5c579
HEAD is now at 57e3477 Build fixes