$ git clone -n https://src.fedoraproject.org/rpms/perl-Net-SSH2.git /var/lib/mock/f45-build-25351-610/root/chroot_tmpdir/scmroot/perl-Net-SSH2
Cloning into '/var/lib/mock/f45-build-25351-610/root/chroot_tmpdir/scmroot/perl-Net-SSH2'...
$ git fetch origin 5c41906111063f45a49bf62201795d54b02e77a8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Net-SSH2
 * [new ref]         5c41906111063f45a49bf62201795d54b02e77a8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5c41906 Perl 5.44 rebuild