$ git clone -n https://src.fedoraproject.org/rpms/keepsecret.git /var/lib/mock/f45-build-14725-463/root/chroot_tmpdir/scmroot/keepsecret
Cloning into '/var/lib/mock/f45-build-14725-463/root/chroot_tmpdir/scmroot/keepsecret'...
$ git fetch origin 9aedb34325c77b1f826bad6c1866b066279d7acc:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/keepsecret
 * [new ref]         9aedb34325c77b1f826bad6c1866b066279d7acc -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9aedb34 26.08.1