$ git clone -n https://src.fedoraproject.org/rpms/perl-Net-SFTP.git /var/lib/mock/f45-build-25363-610/root/chroot_tmpdir/scmroot/perl-Net-SFTP
Cloning into '/var/lib/mock/f45-build-25363-610/root/chroot_tmpdir/scmroot/perl-Net-SFTP'...
$ git fetch origin 20f38360ec9a84bb24b0b27f5e28409c6d6720b8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Net-SFTP
 * [new ref]         20f38360ec9a84bb24b0b27f5e28409c6d6720b8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 20f3836 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild