$ git clone -n https://src.fedoraproject.org/rpms/firefox.git /var/lib/mock/f33-build-343292-58987/root/chroot_tmpdir/scmroot/firefox
Cloning into '/var/lib/mock/f33-build-343292-58987/root/chroot_tmpdir/scmroot/firefox'...
$ git reset --hard e36bb4e6344cd1ea8722bd669daab0dbf236936e
HEAD is now at e36bb4e Added fix for rhbz#1900542