$ git clone -n https://src.fedoraproject.org/rpms/rust-uu_mv.git /var/lib/mock/f41-build-810840-146969/root/chroot_tmpdir/scmroot/rust-uu_mv
Cloning into '/var/lib/mock/f41-build-810840-146969/root/chroot_tmpdir/scmroot/rust-uu_mv'...
$ git fetch origin 261dfa9a3cb24748734fdb0c8136b6caf7c9f964:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-uu_mv
 * [new ref]         261dfa9a3cb24748734fdb0c8136b6caf7c9f964 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 261dfa9 Rebuild with Rust 1.78 to fix incomplete debuginfo and backtraces