$ git clone -n https://src.fedoraproject.org/rpms/rust-new_debug_unreachable.git /var/lib/mock/f40-build-2326058-58825/root/chroot_tmpdir/scmroot/rust-new_debug_unreachable
Cloning into '/var/lib/mock/f40-build-2326058-58825/root/chroot_tmpdir/scmroot/rust-new_debug_unreachable'...
$ git fetch origin e90344689acee6516c7c4c05ddd96dd4c1b46a18:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-new_debug_unreachable
 * [new ref]         e90344689acee6516c7c4c05ddd96dd4c1b46a18 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e903446 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild