$ git clone -n https://src.fedoraproject.org/rpms/golang-github-alecthomas-template.git /var/lib/mock/f41-build-745444-13348/root/chroot_tmpdir/scmroot/golang-github-alecthomas-template
Cloning into '/var/lib/mock/f41-build-745444-13348/root/chroot_tmpdir/scmroot/golang-github-alecthomas-template'...
$ git fetch origin 1f344e4d38844b804329788b7c7feb06149c1944:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-alecthomas-template
 * [new ref]         1f344e4d38844b804329788b7c7feb06149c1944 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1f344e4 Not used since kingpin 2.3.0