$ git clone -n https://src.fedoraproject.org/rpms/rust-matrixcompare-mock.git /var/lib/mock/f40-build-2642355-66450/root/chroot_tmpdir/scmroot/rust-matrixcompare-mock
Cloning into '/var/lib/mock/f40-build-2642355-66450/root/chroot_tmpdir/scmroot/rust-matrixcompare-mock'...
$ git fetch origin 426864f59bcf1d839038a18aa8f1bea7cc4810e8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-matrixcompare-mock
 * [new ref]         426864f59bcf1d839038a18aa8f1bea7cc4810e8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 426864f Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild