$ git clone -n https://src.fedoraproject.org/rpms/ghc-yesod-persistent.git /var/lib/mock/f45-build-52276-908/root/chroot_tmpdir/scmroot/ghc-yesod-persistent
Cloning into '/var/lib/mock/f45-build-52276-908/root/chroot_tmpdir/scmroot/ghc-yesod-persistent'...
$ git fetch origin 899e649cc293844d9ce6f3ec57a3f4265131f722:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-yesod-persistent
 * [new ref]         899e649cc293844d9ce6f3ec57a3f4265131f722 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 899e649 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild