$ git clone -n https://src.fedoraproject.org/rpms/golang-x-tools.git /var/lib/mock/f42-build-867327-175399/root/chroot_tmpdir/scmroot/golang-x-tools
Cloning into '/var/lib/mock/f42-build-867327-175399/root/chroot_tmpdir/scmroot/golang-x-tools'...
$ git fetch origin e3ef888e3ed6ba69339746c19143737c3b26d5ab:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-x-tools
 * [new ref]         e3ef888e3ed6ba69339746c19143737c3b26d5ab -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e3ef888 Update to 0.29.0 upstream release