$ git clone -n https://src.fedoraproject.org/rpms/rust-crypto-hash.git /var/lib/mock/f40-build-2680175-67937/root/chroot_tmpdir/scmroot/rust-crypto-hash
Cloning into '/var/lib/mock/f40-build-2680175-67937/root/chroot_tmpdir/scmroot/rust-crypto-hash'...
$ git fetch origin 685f4704e74b6153c8b2f8f98982d4fd23ee8940:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-crypto-hash
 * [new ref]         685f4704e74b6153c8b2f8f98982d4fd23ee8940 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 685f470 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild