$ git clone -n https://src.fedoraproject.org/rpms/golang-github-nxadm-tail.git /var/lib/mock/f40-build-2226865-52978/root/chroot_tmpdir/scmroot/golang-github-nxadm-tail
Cloning into '/var/lib/mock/f40-build-2226865-52978/root/chroot_tmpdir/scmroot/golang-github-nxadm-tail'...
$ git fetch origin 019ee0447f4f67816faa7f3593923c53073af2b6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-nxadm-tail
 * [new ref]         019ee0447f4f67816faa7f3593923c53073af2b6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 019ee04 Update to 1.4.11 - Closes rhbz#2248756