$ git clone -n https://src.fedoraproject.org/rpms/mozjs102.git /var/lib/mock/f37-build-657209-73197/root/chroot_tmpdir/scmroot/mozjs102
Cloning into '/var/lib/mock/f37-build-657209-73197/root/chroot_tmpdir/scmroot/mozjs102'...
$ git reset --hard f0a1835c9a885f4484385a3d6788ae0db931aef9
HEAD is now at f0a1835 mozjs102-102.3.0