$ git clone -n https://src.fedoraproject.org/rpms/ghc-split.git /var/lib/mock/f45-build-10784-424/root/chroot_tmpdir/scmroot/ghc-split
Cloning into '/var/lib/mock/f45-build-10784-424/root/chroot_tmpdir/scmroot/ghc-split'...
$ git fetch origin 885c82f24ef49a55bc35aede380581eba4d26b3f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-split
 * [new ref]         885c82f24ef49a55bc35aede380581eba4d26b3f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 885c82f Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild