$ git clone -n https://src.fedoraproject.org/rpms/perl-Mail-MboxParser.git /var/lib/mock/f41-build-737382-13290/root/chroot_tmpdir/scmroot/perl-Mail-MboxParser
Cloning into '/var/lib/mock/f41-build-737382-13290/root/chroot_tmpdir/scmroot/perl-Mail-MboxParser'...
$ git fetch origin 59999d74f16f0e864220b098488b3af7d647220f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Mail-MboxParser
 * [new ref]         59999d74f16f0e864220b098488b3af7d647220f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 59999d7 Eliminate use of obsolete %patchN syntax (#2283636)