$ git clone -n https://src.fedoraproject.org/rpms/ghc-spdx.git /var/lib/mock/f39-build-2204803-51973/root/chroot_tmpdir/scmroot/ghc-spdx
Cloning into '/var/lib/mock/f39-build-2204803-51973/root/chroot_tmpdir/scmroot/ghc-spdx'...
$ git fetch origin 2ded8ee5d903ea30d85d9b25dda858d4bafaef7f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-spdx
 * [new ref]         2ded8ee5d903ea30d85d9b25dda858d4bafaef7f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2ded8ee bump Cabal and base