$ git clone -n https://src.fedoraproject.org/rpms/golang-github-masterminds-goutils.git /var/lib/mock/f40-build-2240982-53656/root/chroot_tmpdir/scmroot/golang-github-masterminds-goutils
Cloning into '/var/lib/mock/f40-build-2240982-53656/root/chroot_tmpdir/scmroot/golang-github-masterminds-goutils'...
$ git fetch origin 0b511587bd46d0974967ba6b6dfbc3db61b20d29:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-masterminds-goutils
 * [new ref]         0b511587bd46d0974967ba6b6dfbc3db61b20d29 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0b51158 Remove deprecated %patchN syntax