$ git clone -n https://src.fedoraproject.org/rpms/rust-atom.git /var/lib/mock/f40-build-2071708-49322/root/chroot_tmpdir/scmroot/rust-atom
Cloning into '/var/lib/mock/f40-build-2071708-49322/root/chroot_tmpdir/scmroot/rust-atom'...
$ git fetch origin cf5b99e8a35be277bb3a7d148bbda79a9b42459b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-atom
 * [new ref]         cf5b99e8a35be277bb3a7d148bbda79a9b42459b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cf5b99e Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild