$ git clone -n https://src.fedoraproject.org/rpms/rust-tinystr.git /var/lib/mock/f40-build-2653942-66904/root/chroot_tmpdir/scmroot/rust-tinystr
Cloning into '/var/lib/mock/f40-build-2653942-66904/root/chroot_tmpdir/scmroot/rust-tinystr'...
$ git fetch origin 0cb687db6e4244a5d48e47d56854c007473477b9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-tinystr
 * [new ref]         0cb687db6e4244a5d48e47d56854c007473477b9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0cb687d Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild