$ git clone -n https://src.fedoraproject.org/rpms/firefox.git /var/lib/mock/f31-build-88225-31958/root/chroot_tmpdir/scmroot/firefox
Cloning into '/var/lib/mock/f31-build-88225-31958/root/chroot_tmpdir/scmroot/firefox'...
$ git reset --hard 552b94bac781332262301392dcf065cc61abc462
HEAD is now at 552b94b Use make -j1 for debugging purposes