$ git clone -n https://src.fedoraproject.org/rpms/postgis.git /var/lib/mock/f38-build-side-42-init-devel-1095312-30068/root/chroot_tmpdir/scmroot/postgis
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1095312-30068/root/chroot_tmpdir/scmroot/postgis'...
$ git fetch origin 5b63c4e9a8ead2c012500a20476936a3a09f236c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/postgis
 * [new ref]         5b63c4e9a8ead2c012500a20476936a3a09f236c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5b63c4e Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild