$ git clone -n https://src.fedoraproject.org/rpms/ghc-cassava.git /var/lib/mock/f45-build-10066-413/root/chroot_tmpdir/scmroot/ghc-cassava
Cloning into '/var/lib/mock/f45-build-10066-413/root/chroot_tmpdir/scmroot/ghc-cassava'...
$ git fetch origin 932515f90ecdfc8f4290eea11a19c26e24955977:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-cassava
 * [new ref]         932515f90ecdfc8f4290eea11a19c26e24955977 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 932515f Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild