$ git clone -n https://src.fedoraproject.org/rpms/rust-rmp-serde.git /var/lib/mock/f40-build-2652385-66894/root/chroot_tmpdir/scmroot/rust-rmp-serde
Cloning into '/var/lib/mock/f40-build-2652385-66894/root/chroot_tmpdir/scmroot/rust-rmp-serde'...
$ git fetch origin 562b8801f945dd332f6257fe8533fb15c9f80745:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-rmp-serde
 * [new ref]         562b8801f945dd332f6257fe8533fb15c9f80745 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 562b880 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild