$ git clone -n https://src.fedoraproject.org/rpms/golang-gopkg-tomb-1.git /var/lib/mock/f38-build-side-42-init-devel-923150-28737/root/chroot_tmpdir/scmroot/golang-gopkg-tomb-1
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-923150-28737/root/chroot_tmpdir/scmroot/golang-gopkg-tomb-1'...
$ git fetch origin 28de04d9d09d7291456cf159793b58b50c1366d3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-gopkg-tomb-1
 * [new ref]         28de04d9d09d7291456cf159793b58b50c1366d3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 28de04d Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild