$ git clone -n https://src.fedoraproject.org/rpms/gpaste.git /var/lib/mock/f40-build-2158773-50939/root/chroot_tmpdir/scmroot/gpaste
Cloning into '/var/lib/mock/f40-build-2158773-50939/root/chroot_tmpdir/scmroot/gpaste'...
$ git fetch origin d43229397abf626ed17de919fde4ef5aba8fb5cf:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gpaste
 * [new ref]         d43229397abf626ed17de919fde4ef5aba8fb5cf -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d432293 Update to 45