$ git clone -n https://src.fedoraproject.org/rpms/mozilla-noscript.git /var/lib/mock/f45-build-19162-542/root/chroot_tmpdir/scmroot/mozilla-noscript
Cloning into '/var/lib/mock/f45-build-19162-542/root/chroot_tmpdir/scmroot/mozilla-noscript'...
$ git fetch origin b1753d1fe5c77b4a0ee7af901c9c14c1001cac52:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mozilla-noscript
 * [new ref]         b1753d1fe5c77b4a0ee7af901c9c14c1001cac52 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b1753d1 update to 13.6.31 (resolves rhbz#2498427)