$ git clone -n https://src.fedoraproject.org/rpms/rust-uu_hashsum.git /var/lib/mock/f40-build-779930-130551/root/chroot_tmpdir/scmroot/rust-uu_hashsum
Cloning into '/var/lib/mock/f40-build-779930-130551/root/chroot_tmpdir/scmroot/rust-uu_hashsum'...
$ git fetch origin a203d21441a0143ce5f08e7012614e599861f7ff:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-uu_hashsum
 * [new ref]         a203d21441a0143ce5f08e7012614e599861f7ff -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a203d21 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild