$ git clone -n https://src.fedoraproject.org/rpms/golang-github-google-trillian.git /var/lib/mock/f40-build-2654308-66905/root/chroot_tmpdir/scmroot/golang-github-google-trillian
Cloning into '/var/lib/mock/f40-build-2654308-66905/root/chroot_tmpdir/scmroot/golang-github-google-trillian'...
$ git fetch origin a68f3f134aa4d35ddf33599b01476f084220789f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-google-trillian
 * [new ref]         a68f3f134aa4d35ddf33599b01476f084220789f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a68f3f1 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild