$ git clone -n https://src.fedoraproject.org/rpms/ghc-cryptohash-sha256.git /var/lib/mock/f45-build-10163-414/root/chroot_tmpdir/scmroot/ghc-cryptohash-sha256
Cloning into '/var/lib/mock/f45-build-10163-414/root/chroot_tmpdir/scmroot/ghc-cryptohash-sha256'...
$ git fetch origin b80a662c29604acaaf7ce7eeb7df8a787594648a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-cryptohash-sha256
 * [new ref]         b80a662c29604acaaf7ce7eeb7df8a787594648a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b80a662 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild