$ git clone -n https://src.fedoraproject.org/rpms/grip.git /var/lib/mock/f38-build-723039-98985/root/chroot_tmpdir/scmroot/grip
Cloning into '/var/lib/mock/f38-build-723039-98985/root/chroot_tmpdir/scmroot/grip'...
$ git fetch origin 21c363dba267db3fea314ea3ba0110460294e2f0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/grip
 * [new ref]         21c363dba267db3fea314ea3ba0110460294e2f0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 21c363d Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild