$ git clone -n https://src.fedoraproject.org/rpms/rust-unicode-xid.git /var/lib/mock/f39-build-1517406-35726/root/chroot_tmpdir/scmroot/rust-unicode-xid
Cloning into '/var/lib/mock/f39-build-1517406-35726/root/chroot_tmpdir/scmroot/rust-unicode-xid'...
$ git fetch origin 7125046e1d95bd283ead0012bd55f4de66a79b1e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-unicode-xid
 * [new ref]         7125046e1d95bd283ead0012bd55f4de66a79b1e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7125046 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild