$ git clone -n https://src.fedoraproject.org/rpms/gpaste.git /var/lib/mock/f42-build-side-1-3498292-45962/root/chroot_tmpdir/scmroot/gpaste
Cloning into '/var/lib/mock/f42-build-side-1-3498292-45962/root/chroot_tmpdir/scmroot/gpaste'...
$ git fetch origin 628d85fa72ca73359e8e092d4bd8fdb3e85a05ed:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gpaste
 * [new ref]         628d85fa72ca73359e8e092d4bd8fdb3e85a05ed -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 628d85f Update to 45.3