$ git clone -n https://src.fedoraproject.org/rpms/rust-bigdecimal.git /var/lib/mock/f40-build-2373342-60408/root/chroot_tmpdir/scmroot/rust-bigdecimal
Cloning into '/var/lib/mock/f40-build-2373342-60408/root/chroot_tmpdir/scmroot/rust-bigdecimal'...
$ git fetch origin 9d6fd9ad203d6d75a873d7984f75c0fdab4877a4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-bigdecimal
 * [new ref]         9d6fd9ad203d6d75a873d7984f75c0fdab4877a4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9d6fd9a Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild