$ git clone -n https://src.fedoraproject.org/rpms/ghc-yesod-form.git /var/lib/mock/f41-build-side-1-2750572-31052/root/chroot_tmpdir/scmroot/ghc-yesod-form
Cloning into '/var/lib/mock/f41-build-side-1-2750572-31052/root/chroot_tmpdir/scmroot/ghc-yesod-form'...
$ git fetch origin 9d3a00eab1f7cd839de3073ebdc7eb98689d4165:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-yesod-form
 * [new ref]         9d3a00eab1f7cd839de3073ebdc7eb98689d4165 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9d3a00e https://hackage.haskell.org/package/yesod-form-1.7.6/changelog