$ git clone -n https://src.fedoraproject.org/rpms/golang-github-putdotio-putio.git /var/lib/mock/f39-build-1661068-40654/root/chroot_tmpdir/scmroot/golang-github-putdotio-putio
Cloning into '/var/lib/mock/f39-build-1661068-40654/root/chroot_tmpdir/scmroot/golang-github-putdotio-putio'...
$ git fetch origin 482e70235999f126c0cef79e1d4d5493fccdb9f5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-putdotio-putio
 * [new ref]         482e70235999f126c0cef79e1d4d5493fccdb9f5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 482e702 Update to 1.7.1 - Closes rhbz#2142536