$ git clone -n https://src.fedoraproject.org/rpms/golang-x-net.git /var/lib/mock/f40-build-1236393-22898/root/chroot_tmpdir/scmroot/golang-x-net
Cloning into '/var/lib/mock/f40-build-1236393-22898/root/chroot_tmpdir/scmroot/golang-x-net'...
$ git fetch origin 64877593a01e21f0424d3676bdf50bfa1b7f41ac:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-x-net
 * [new ref]         64877593a01e21f0424d3676bdf50bfa1b7f41ac -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6487759 update to v0.26.0, close rhbz#2279558