$ git clone -n https://src.fedoraproject.org/rpms/rust-error-chain.git /var/lib/mock/f40-build-2353357-60250/root/chroot_tmpdir/scmroot/rust-error-chain
Cloning into '/var/lib/mock/f40-build-2353357-60250/root/chroot_tmpdir/scmroot/rust-error-chain'...
$ git fetch origin f38d7b6abf0cbb98848ea337bdf07f569a6df13b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-error-chain
 * [new ref]         f38d7b6abf0cbb98848ea337bdf07f569a6df13b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f38d7b6 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild