$ git clone -n https://src.fedoraproject.org/rpms/rust-unicode-segmentation.git /var/lib/mock/f40-build-2040503-48360/root/chroot_tmpdir/scmroot/rust-unicode-segmentation
Cloning into '/var/lib/mock/f40-build-2040503-48360/root/chroot_tmpdir/scmroot/rust-unicode-segmentation'...
$ git fetch origin 0e757bb0889f7a716dd387e157efc7ba1788555c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-unicode-segmentation
 * [new ref]         0e757bb0889f7a716dd387e157efc7ba1788555c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0e757bb Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild