$ git clone -n https://src.fedoraproject.org/rpms/rust-rustdct.git /var/lib/mock/f40-build-2660370-66918/root/chroot_tmpdir/scmroot/rust-rustdct
Cloning into '/var/lib/mock/f40-build-2660370-66918/root/chroot_tmpdir/scmroot/rust-rustdct'...
$ git fetch origin 7f8ccfd8b45d2829cc89893faeb4fd60777e7a2b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-rustdct
 * [new ref]         7f8ccfd8b45d2829cc89893faeb4fd60777e7a2b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7f8ccfd Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild