$ git clone -n https://src.fedoraproject.org/rpms/rust-const-random-macro.git /var/lib/mock/f40-build-2680089-67937/root/chroot_tmpdir/scmroot/rust-const-random-macro
Cloning into '/var/lib/mock/f40-build-2680089-67937/root/chroot_tmpdir/scmroot/rust-const-random-macro'...
$ git fetch origin c9c46b9b31ce1b004efd4d4c67bfb6f15e87dd3b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-const-random-macro
 * [new ref]         c9c46b9b31ce1b004efd4d4c67bfb6f15e87dd3b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c9c46b9 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild