$ git clone -n https://src.fedoraproject.org/rpms/ghc-monadLib.git /var/lib/mock/f45-build-10540-418/root/chroot_tmpdir/scmroot/ghc-monadLib
Cloning into '/var/lib/mock/f45-build-10540-418/root/chroot_tmpdir/scmroot/ghc-monadLib'...
$ git fetch origin e3f6b4f0ccc45e0ca102bdb530c0375739be6017:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-monadLib
 * [new ref]         e3f6b4f0ccc45e0ca102bdb530c0375739be6017 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e3f6b4f Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild