$ git clone -n https://src.fedoraproject.org/rpms/rust-unicode_names2.git /var/lib/mock/f42-build-3251793-41222/root/chroot_tmpdir/scmroot/rust-unicode_names2
Cloning into '/var/lib/mock/f42-build-3251793-41222/root/chroot_tmpdir/scmroot/rust-unicode_names2'...
$ git fetch origin 62b8fbcb1b41eb62a665bece0ab28e5249d33d7d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-unicode_names2
 * [new ref]         62b8fbcb1b41eb62a665bece0ab28e5249d33d7d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 62b8fbc Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild