$ git clone -n https://src.fedoraproject.org/rpms/ghc-servant-server.git /var/lib/mock/f40-build-802043-143925/root/chroot_tmpdir/scmroot/ghc-servant-server
Cloning into '/var/lib/mock/f40-build-802043-143925/root/chroot_tmpdir/scmroot/ghc-servant-server'...
$ git fetch origin 018c4ffb009ab0e14decfd94bd20a633d20bed3d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-servant-server
 * [new ref]         018c4ffb009ab0e14decfd94bd20a633d20bed3d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 018c4ff Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild