$ git clone -n https://src.fedoraproject.org/rpms/ghc-system-fileio.git /var/lib/mock/f40-build-2279969-55371/root/chroot_tmpdir/scmroot/ghc-system-fileio
Cloning into '/var/lib/mock/f40-build-2279969-55371/root/chroot_tmpdir/scmroot/ghc-system-fileio'...
$ git fetch origin 1295daddb8e02c930d3a7299791f33c2968443d2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-system-fileio
 * [new ref]         1295daddb8e02c930d3a7299791f33c2968443d2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1295dad Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild