$ git clone -n https://src.fedoraproject.org/rpms/rust-libxml.git /var/lib/mock/f40-build-2653002-66897/root/chroot_tmpdir/scmroot/rust-libxml
Cloning into '/var/lib/mock/f40-build-2653002-66897/root/chroot_tmpdir/scmroot/rust-libxml'...
$ git fetch origin 12eda850fa3888ceae6c9cd24bbf52cf6e1ae65e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-libxml
 * [new ref]         12eda850fa3888ceae6c9cd24bbf52cf6e1ae65e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 12eda85 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild