$ git clone -n https://src.fedoraproject.org/rpms/rust-unicode-segmentation.git /var/lib/mock/f40-build-2328266-58867/root/chroot_tmpdir/scmroot/rust-unicode-segmentation
Cloning into '/var/lib/mock/f40-build-2328266-58867/root/chroot_tmpdir/scmroot/rust-unicode-segmentation'...
$ git fetch origin 23488e1f87e346e7348f0d4e3c1bd27ca14d0fb5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-unicode-segmentation
 * [new ref]         23488e1f87e346e7348f0d4e3c1bd27ca14d0fb5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 23488e1 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild