$ git clone -n https://src.fedoraproject.org/rpms/perl-Object-InsideOut.git /var/lib/mock/f43-perl-60950435-6586682/root/chroot_tmpdir/scmroot/perl-Object-InsideOut
Cloning into '/var/lib/mock/f43-perl-60950435-6586682/root/chroot_tmpdir/scmroot/perl-Object-InsideOut'...
$ git fetch origin 0f984fcdec5972e17cf4d7f1b5d60dbc2b86f0e4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Object-InsideOut
 * [new ref]         0f984fcdec5972e17cf4d7f1b5d60dbc2b86f0e4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0f984fc Perl 5.42 rebuild