$ git clone -n https://src.fedoraproject.org/rpms/mozjs78.git /var/lib/mock/f33-build-371438-61401/root/chroot_tmpdir/scmroot/mozjs78
Cloning into '/var/lib/mock/f33-build-371438-61401/root/chroot_tmpdir/scmroot/mozjs78'...
$ git reset --hard 79c79737265c5b37c86001d14c2e71c7a1f600de
HEAD is now at 79c7973 Release 78.5.0