$ git clone -n https://src.fedoraproject.org/rpms/rust-lab.git /var/lib/mock/f40-build-2082606-49852/root/chroot_tmpdir/scmroot/rust-lab
Cloning into '/var/lib/mock/f40-build-2082606-49852/root/chroot_tmpdir/scmroot/rust-lab'...
$ git fetch origin f2389dd582bd288099346d411a18f1a30de58a77:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-lab
 * [new ref]         f2389dd582bd288099346d411a18f1a30de58a77 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f2389dd Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild