$ git clone -n https://src.fedoraproject.org/rpms/mozjs45.git /var/lib/mock/f29-build-6819-1679/root/thebuilddir/tmp/scmroot/mozjs45
Cloning into '/var/lib/mock/f29-build-6819-1679/root/thebuilddir/tmp/scmroot/mozjs45'...
$ git reset --hard 1c29c92497f7a672250c7ad609d55e83934c47c9
HEAD is now at 1c29c92 Fix the build