$ git clone -n https://src.fedoraproject.org/rpms/ghc-optparse-applicative.git /var/lib/mock/f41-build-side-1-3002970-36609/root/chroot_tmpdir/scmroot/ghc-optparse-applicative
Cloning into '/var/lib/mock/f41-build-side-1-3002970-36609/root/chroot_tmpdir/scmroot/ghc-optparse-applicative'...
$ git fetch origin 6133aa4429fd5ba40aa47a14d61483e6a17550ff:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-optparse-applicative
 * [new ref]         6133aa4429fd5ba40aa47a14d61483e6a17550ff -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6133aa4 https://hackage.haskell.org/package/optparse-applicative-0.18.1.0/changelog