$ git clone -n https://src.fedoraproject.org/rpms/rust-matrixcompare-mock.git /var/lib/mock/f38-build-side-42-init-devel-1394054-31050/root/chroot_tmpdir/scmroot/rust-matrixcompare-mock
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1394054-31050/root/chroot_tmpdir/scmroot/rust-matrixcompare-mock'...
$ git fetch origin 4dc4b487ffa00697b752cc4b55cf98201a0a5c5f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-matrixcompare-mock
 * [new ref]         4dc4b487ffa00697b752cc4b55cf98201a0a5c5f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4dc4b48 Regenerate with rust2rpm v24 and add missing license file