$ git clone -n https://src.fedoraproject.org/rpms/golang-github-johncgriffin-overflow.git /var/lib/mock/f40-build-2668163-67189/root/chroot_tmpdir/scmroot/golang-github-johncgriffin-overflow
Cloning into '/var/lib/mock/f40-build-2668163-67189/root/chroot_tmpdir/scmroot/golang-github-johncgriffin-overflow'...
$ git fetch origin de5b6297dfa257aeebe986487736a420001abc40:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-johncgriffin-overflow
 * [new ref]         de5b6297dfa257aeebe986487736a420001abc40 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at de5b629 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild