$ git clone -n https://src.fedoraproject.org/rpms/ghc-retry.git /var/lib/mock/f40-build-742818-110925/root/chroot_tmpdir/scmroot/ghc-retry
Cloning into '/var/lib/mock/f40-build-742818-110925/root/chroot_tmpdir/scmroot/ghc-retry'...
$ git fetch origin eea450114266e208bda8476f3d1c9325ed45d321:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-retry
 * [new ref]         eea450114266e208bda8476f3d1c9325ed45d321 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at eea4501 https://hackage.haskell.org/package/retry-0.9.3.1/changelog