$ git clone -n https://src.fedoraproject.org/rpms/rust-uu_seq.git /var/lib/mock/f41-build-810758-146931/root/chroot_tmpdir/scmroot/rust-uu_seq
Cloning into '/var/lib/mock/f41-build-810758-146931/root/chroot_tmpdir/scmroot/rust-uu_seq'...
$ git fetch origin b12671f61584e2974a7144ea2a726787a5c780e2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-uu_seq
 * [new ref]         b12671f61584e2974a7144ea2a726787a5c780e2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b12671f Rebuild with Rust 1.78 to fix incomplete debuginfo and backtraces