$ git clone -n https://src.fedoraproject.org/rpms/darcs.git /var/lib/mock/f40-build-777528-129389/root/chroot_tmpdir/scmroot/darcs
Cloning into '/var/lib/mock/f40-build-777528-129389/root/chroot_tmpdir/scmroot/darcs'...
$ git fetch origin 250387331efead4c7c8de84537366793aa455129:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/darcs
 * [new ref]         250387331efead4c7c8de84537366793aa455129 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2503873 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild