$ git clone -n https://src.fedoraproject.org/rpms/rust-uu_uniq.git /var/lib/mock/f41-build-810744-146925/root/chroot_tmpdir/scmroot/rust-uu_uniq
Cloning into '/var/lib/mock/f41-build-810744-146925/root/chroot_tmpdir/scmroot/rust-uu_uniq'...
$ git fetch origin cf5f94134aec3301b2926d0d8d9302d2c9ec4830:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-uu_uniq
 * [new ref]         cf5f94134aec3301b2926d0d8d9302d2c9ec4830 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cf5f941 Rebuild with Rust 1.78 to fix incomplete debuginfo and backtraces