$ git clone -n https://src.fedoraproject.org/rpms/rust-cast.git /var/lib/mock/f40-build-2650928-66878/root/chroot_tmpdir/scmroot/rust-cast
Cloning into '/var/lib/mock/f40-build-2650928-66878/root/chroot_tmpdir/scmroot/rust-cast'...
$ git fetch origin ec8ef829da4ddba3cf96bb71226051d3332d29b7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-cast
 * [new ref]         ec8ef829da4ddba3cf96bb71226051d3332d29b7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ec8ef82 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild