$ git clone -n https://src.fedoraproject.org/rpms/rust-tracing-subscriber.git /var/lib/mock/f40-build-2328134-58867/root/chroot_tmpdir/scmroot/rust-tracing-subscriber
Cloning into '/var/lib/mock/f40-build-2328134-58867/root/chroot_tmpdir/scmroot/rust-tracing-subscriber'...
$ git fetch origin e204ffb38b618a2842ce96a66649c535ab6bdd79:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-tracing-subscriber
 * [new ref]         e204ffb38b618a2842ce96a66649c535ab6bdd79 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e204ffb Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild