$ git clone -n https://src.fedoraproject.org/rpms/rust-uu_tail.git /var/lib/mock/f40-build-781133-131424/root/chroot_tmpdir/scmroot/rust-uu_tail
Cloning into '/var/lib/mock/f40-build-781133-131424/root/chroot_tmpdir/scmroot/rust-uu_tail'...
$ git fetch origin 531ea438f2acd80124487e068191a955a5ab2773:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-uu_tail
 * [new ref]         531ea438f2acd80124487e068191a955a5ab2773 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 531ea43 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild