$ git clone -n https://src.fedoraproject.org/rpms/rust-uu_od.git /var/lib/mock/f41-build-810836-146965/root/chroot_tmpdir/scmroot/rust-uu_od
Cloning into '/var/lib/mock/f41-build-810836-146965/root/chroot_tmpdir/scmroot/rust-uu_od'...
$ git fetch origin 70e5525d1ecbfb239f978a155537188ba22a4ac8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-uu_od
 * [new ref]         70e5525d1ecbfb239f978a155537188ba22a4ac8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 70e5525 Rebuild with Rust 1.78 to fix incomplete debuginfo and backtraces