$ git clone -n https://src.fedoraproject.org/rpms/rust-fedora-update-feedback.git /var/lib/mock/f40-build-737331-13289/root/chroot_tmpdir/scmroot/rust-fedora-update-feedback
Cloning into '/var/lib/mock/f40-build-737331-13289/root/chroot_tmpdir/scmroot/rust-fedora-update-feedback'...
$ git fetch origin bc32d992ecd1ca28766df02f87ab1d72b3877b58:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-fedora-update-feedback
 * [new ref]         bc32d992ecd1ca28766df02f87ab1d72b3877b58 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bc32d99 Rebuild with Rust 1.78 to fix incomplete debuginfo and backtraces