$ git clone -n https://src.fedoraproject.org/rpms/ghc-yesod-form.git /var/lib/mock/f39-build-2561096-62096/root/chroot_tmpdir/scmroot/ghc-yesod-form
Cloning into '/var/lib/mock/f39-build-2561096-62096/root/chroot_tmpdir/scmroot/ghc-yesod-form'...
$ git fetch origin 434315b378a61a0869a0f42e668eb9667580a56d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-yesod-form
 * [new ref]         434315b378a61a0869a0f42e668eb9667580a56d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 434315b https://hackage.haskell.org/package/yesod-form-1.7.4/changelog