$ git clone -n https://src.fedoraproject.org/rpms/rust-quinn-proto.git /var/lib/mock/f40-build-2497540-61664/root/chroot_tmpdir/scmroot/rust-quinn-proto
Cloning into '/var/lib/mock/f40-build-2497540-61664/root/chroot_tmpdir/scmroot/rust-quinn-proto'...
$ git fetch origin 7667a7c3a39a739b93b843607ba7f2b0b9c9f110:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-quinn-proto
 * [new ref]         7667a7c3a39a739b93b843607ba7f2b0b9c9f110 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7667a7c Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild