$ git clone -n https://src.fedoraproject.org/rpms/golang-github-siddontang.git /var/lib/mock/f40-build-2595425-62744/root/chroot_tmpdir/scmroot/golang-github-siddontang
Cloning into '/var/lib/mock/f40-build-2595425-62744/root/chroot_tmpdir/scmroot/golang-github-siddontang'...
$ git fetch origin a7be7b39eaca0d3cf7ca014a6dc633f67dc39a4c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-siddontang
 * [new ref]         a7be7b39eaca0d3cf7ca014a6dc633f67dc39a4c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a7be7b3 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild