$ git clone -n https://src.fedoraproject.org/rpms/rust-grep-printer.git /var/lib/mock/f40-build-2660211-66918/root/chroot_tmpdir/scmroot/rust-grep-printer
Cloning into '/var/lib/mock/f40-build-2660211-66918/root/chroot_tmpdir/scmroot/rust-grep-printer'...
$ git fetch origin 8ed53e0810fbfbc9e5c9f4205384e8a6a005a634:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-grep-printer
 * [new ref]         8ed53e0810fbfbc9e5c9f4205384e8a6a005a634 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8ed53e0 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild