$ git clone -n https://src.fedoraproject.org/rpms/ghc-psqueues.git /var/lib/mock/f41-build-side-1-2955613-35550/root/chroot_tmpdir/scmroot/ghc-psqueues
Cloning into '/var/lib/mock/f41-build-side-1-2955613-35550/root/chroot_tmpdir/scmroot/ghc-psqueues'...
$ git fetch origin 97bb456890cdadbcb88a4801c98c4c8c0ae07994:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-psqueues
 * [new ref]         97bb456890cdadbcb88a4801c98c4c8c0ae07994 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 97bb456 https://hackage.haskell.org/package/psqueues-0.2.8.0/changelog