$ git clone -n https://src.fedoraproject.org/rpms/rust-resctl-demo.git /var/lib/mock/f41-build-811006-147129/root/chroot_tmpdir/scmroot/rust-resctl-demo
Cloning into '/var/lib/mock/f41-build-811006-147129/root/chroot_tmpdir/scmroot/rust-resctl-demo'...
$ git fetch origin a9e96d88bdd284b39a7c2a04ccda1ef8948d31e1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-resctl-demo
 * [new ref]         a9e96d88bdd284b39a7c2a04ccda1ef8948d31e1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a9e96d8 Rebuild with Rust 1.78 to fix incomplete debuginfo and backtraces