$ git clone -n https://src.fedoraproject.org/rpms/ghc-crypto-random.git /var/lib/mock/f41-build-side-1-2811424-32930/root/chroot_tmpdir/scmroot/ghc-crypto-random
Cloning into '/var/lib/mock/f41-build-side-1-2811424-32930/root/chroot_tmpdir/scmroot/ghc-crypto-random'...
$ git fetch origin 38827e9e5f7a20e0192eaf19783fa041725c0cf6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-crypto-random
 * [new ref]         38827e9e5f7a20e0192eaf19783fa041725c0cf6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 38827e9 retire: FTBFS and no longer maintained or needed (was deprecated upstream in favor of cryptonite, which is also deprecated)