$ git clone -n https://src.fedoraproject.org/rpms/rust-matrixcompare-mock.git /var/lib/mock/f40-build-2092883-50292/root/chroot_tmpdir/scmroot/rust-matrixcompare-mock
Cloning into '/var/lib/mock/f40-build-2092883-50292/root/chroot_tmpdir/scmroot/rust-matrixcompare-mock'...
$ git fetch origin 5a4d6ad0b7355e939eaaf20ca115f657e5b8d419:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-matrixcompare-mock
 * [new ref]         5a4d6ad0b7355e939eaaf20ca115f657e5b8d419 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5a4d6ad Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild