$ git clone -n https://src.fedoraproject.org/rpms/firefox.git /var/lib/mock/f33-build-505111-64406/root/chroot_tmpdir/scmroot/firefox
Cloning into '/var/lib/mock/f33-build-505111-64406/root/chroot_tmpdir/scmroot/firefox'...
$ git reset --hard b0526b0936062f9bc0acbc0720fd0c97ca689602
HEAD is now at b0526b0 Merge branch 'master' into f33