$ git clone -n https://src.fedoraproject.org/rpms/rust-failure.git /var/lib/mock/f40-build-2061815-49167/root/chroot_tmpdir/scmroot/rust-failure
Cloning into '/var/lib/mock/f40-build-2061815-49167/root/chroot_tmpdir/scmroot/rust-failure'...
$ git fetch origin e99c2a585e2463fcf0510a4e89cd7c9c85288133:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-failure
 * [new ref]         e99c2a585e2463fcf0510a4e89cd7c9c85288133 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e99c2a5 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild