$ git clone -n https://src.fedoraproject.org/rpms/kactivities.git /var/lib/mock/f38-build-side-42-init-devel-752055-27662/root/chroot_tmpdir/scmroot/kactivities
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-752055-27662/root/chroot_tmpdir/scmroot/kactivities'...
$ git fetch origin 21ab2c5cf95b455b33bacd3838999d109c1aee5e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kactivities
 * [new ref]         21ab2c5cf95b455b33bacd3838999d109c1aee5e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 21ab2c5 Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild