$ git clone -n https://src.fedoraproject.org/rpms/rust-sval_flatten.git /var/lib/mock/f40-build-2342045-59806/root/chroot_tmpdir/scmroot/rust-sval_flatten
Cloning into '/var/lib/mock/f40-build-2342045-59806/root/chroot_tmpdir/scmroot/rust-sval_flatten'...
$ git fetch origin 2ec7f988defef32189546f5adbb1a1ca201f3aa3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-sval_flatten
 * [new ref]         2ec7f988defef32189546f5adbb1a1ca201f3aa3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2ec7f98 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild