$ git clone -n https://src.fedoraproject.org/rpms/perl-autodie.git /var/lib/mock/f43-perl-60964556-6587000/root/chroot_tmpdir/scmroot/perl-autodie
Cloning into '/var/lib/mock/f43-perl-60964556-6587000/root/chroot_tmpdir/scmroot/perl-autodie'...
$ git fetch origin baa9ec1f097fc64444681e9b60c9e4b90d39cdc0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-autodie
 * [new ref]         baa9ec1f097fc64444681e9b60c9e4b90d39cdc0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at baa9ec1 Perl 5.42 re-rebuild of bootstrapped packages