$ git clone -n https://src.fedoraproject.org/rpms/perl-Syntax-Keyword-Match.git /var/lib/mock/f41-build-816735-150376/root/chroot_tmpdir/scmroot/perl-Syntax-Keyword-Match
Cloning into '/var/lib/mock/f41-build-816735-150376/root/chroot_tmpdir/scmroot/perl-Syntax-Keyword-Match'...
$ git fetch origin 3db1f05e5208df78c808faab2a94bd00c2ff38b6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Syntax-Keyword-Match
 * [new ref]         3db1f05e5208df78c808faab2a94bd00c2ff38b6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3db1f05 Perl 5.40 rebuild