$ git clone -n https://src.fedoraproject.org/rpms/perl-Starman.git /var/lib/mock/f40-build-2212897-52297/root/chroot_tmpdir/scmroot/perl-Starman
Cloning into '/var/lib/mock/f40-build-2212897-52297/root/chroot_tmpdir/scmroot/perl-Starman'...
$ git fetch origin 945df7ba1654f47aadc141429990a17912fc87e4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Starman
 * [new ref]         945df7ba1654f47aadc141429990a17912fc87e4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 945df7b Update ot 0.4017