$ git clone -n https://src.fedoraproject.org/rpms/rust-uu_mkdir.git /var/lib/mock/f40-build-779975-130575/root/chroot_tmpdir/scmroot/rust-uu_mkdir
Cloning into '/var/lib/mock/f40-build-779975-130575/root/chroot_tmpdir/scmroot/rust-uu_mkdir'...
$ git fetch origin 7af2d5628c655bdff0b6561a282c7a3a6f19fd9e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-uu_mkdir
 * [new ref]         7af2d5628c655bdff0b6561a282c7a3a6f19fd9e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7af2d56 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild