$ git clone -n https://src.fedoraproject.org/rpms/perl-Devel-CallParser.git /var/lib/mock/f45-build-23063-595/root/chroot_tmpdir/scmroot/perl-Devel-CallParser
Cloning into '/var/lib/mock/f45-build-23063-595/root/chroot_tmpdir/scmroot/perl-Devel-CallParser'...
$ git fetch origin 6b260c7d7d6b1e8b125fa36139800b457e16b669:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Devel-CallParser
 * [new ref]         6b260c7d7d6b1e8b125fa36139800b457e16b669 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6b260c7 Perl 5.44 rebuild