$ git clone -n https://src.fedoraproject.org/rpms/golang-github-google-trillian.git /var/lib/mock/f38-build-side-42-init-devel-843201-28418/root/chroot_tmpdir/scmroot/golang-github-google-trillian
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-843201-28418/root/chroot_tmpdir/scmroot/golang-github-google-trillian'...
$ git fetch origin 72d08c70a9706703629b00c18113dfbffe7304a4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-google-trillian
 * [new ref]         72d08c70a9706703629b00c18113dfbffe7304a4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 72d08c7 Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild