$ git clone -n https://src.fedoraproject.org/rpms/rust-fedora.git /var/lib/mock/f40-build-2373491-60409/root/chroot_tmpdir/scmroot/rust-fedora
Cloning into '/var/lib/mock/f40-build-2373491-60409/root/chroot_tmpdir/scmroot/rust-fedora'...
$ git fetch origin be26c3bf4b1969724c4276075a61d92a710a02f7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-fedora
 * [new ref]         be26c3bf4b1969724c4276075a61d92a710a02f7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at be26c3b Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild