$ git clone -n https://src.fedoraproject.org/rpms/rust-downcast-rs.git /var/lib/mock/f40-build-2092034-50258/root/chroot_tmpdir/scmroot/rust-downcast-rs
Cloning into '/var/lib/mock/f40-build-2092034-50258/root/chroot_tmpdir/scmroot/rust-downcast-rs'...
$ git fetch origin 36aeb361343139c35a745a86c8cb22edd80bdf07:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-downcast-rs
 * [new ref]         36aeb361343139c35a745a86c8cb22edd80bdf07 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 36aeb36 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild