$ git clone -n https://src.fedoraproject.org/rpms/ghc-MonadRandom.git /var/lib/mock/f45-build-9923-411/root/chroot_tmpdir/scmroot/ghc-MonadRandom
Cloning into '/var/lib/mock/f45-build-9923-411/root/chroot_tmpdir/scmroot/ghc-MonadRandom'...
$ git fetch origin fdba36daa63b494923e30e82961987ae022e3612:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-MonadRandom
 * [new ref]         fdba36daa63b494923e30e82961987ae022e3612 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fdba36d Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild