$ git clone -n https://src.fedoraproject.org/rpms/rust-below-dump.git /var/lib/mock/f40-build-2677797-67912/root/chroot_tmpdir/scmroot/rust-below-dump
Cloning into '/var/lib/mock/f40-build-2677797-67912/root/chroot_tmpdir/scmroot/rust-below-dump'...
$ git fetch origin 26b88aa7398429e7942dbefb6c0e0fd90f0dd692:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-below-dump
 * [new ref]         26b88aa7398429e7942dbefb6c0e0fd90f0dd692 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 26b88aa Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild