$ git clone -n https://src.fedoraproject.org/rpms/mozjs68.git /var/lib/mock/f33-build-175916-44538/root/chroot_tmpdir/scmroot/mozjs68
Cloning into '/var/lib/mock/f33-build-175916-44538/root/chroot_tmpdir/scmroot/mozjs68'...
$ git reset --hard c86ec0ca1af523a4fc9536d59990191fee34472b
HEAD is now at c86ec0c Update to 68.7.0