$ git clone -n https://src.fedoraproject.org/rpms/firefox.git /var/lib/mock/f33-build-330856-58235/root/chroot_tmpdir/scmroot/firefox
Cloning into '/var/lib/mock/f33-build-330856-58235/root/chroot_tmpdir/scmroot/firefox'...
$ git reset --hard 28cf3442dd5b1b1e1ad37cae9a12a7590bd1fc08
HEAD is now at 28cf344 Update to 78.0.2 build2