$ git clone -n https://src.fedoraproject.org/rpms/golang-github-dennwc-varint.git /var/lib/mock/f38-build-side-42-init-devel-847872-28422/root/chroot_tmpdir/scmroot/golang-github-dennwc-varint
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-847872-28422/root/chroot_tmpdir/scmroot/golang-github-dennwc-varint'...
$ git fetch origin 70739862ec19286b227f49c93b6a20b9a78e32f9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-dennwc-varint
 * [new ref]         70739862ec19286b227f49c93b6a20b9a78e32f9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7073986 Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild