$ git clone -n https://src.fedoraproject.org/rpms/ghc-aeson-pretty.git /var/lib/mock/f45-build-9960-412/root/chroot_tmpdir/scmroot/ghc-aeson-pretty
Cloning into '/var/lib/mock/f45-build-9960-412/root/chroot_tmpdir/scmroot/ghc-aeson-pretty'...
$ git fetch origin dcf303972b942e26ed3007a495971c217ae90681:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-aeson-pretty
 * [new ref]         dcf303972b942e26ed3007a495971c217ae90681 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dcf3039 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild