$ git clone -n https://src.fedoraproject.org/rpms/rust-transpose.git /var/lib/mock/f40-build-2644129-66496/root/chroot_tmpdir/scmroot/rust-transpose
Cloning into '/var/lib/mock/f40-build-2644129-66496/root/chroot_tmpdir/scmroot/rust-transpose'...
$ git fetch origin 2af09895f3198621c573ed9938db4dae07b64209:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-transpose
 * [new ref]         2af09895f3198621c573ed9938db4dae07b64209 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2af0989 Update to 0.2.3