$ git clone -n https://src.fedoraproject.org/rpms/perl-Test-CPAN-Meta.git /var/lib/mock/f41-build-1146614-21197/root/chroot_tmpdir/scmroot/perl-Test-CPAN-Meta
Cloning into '/var/lib/mock/f41-build-1146614-21197/root/chroot_tmpdir/scmroot/perl-Test-CPAN-Meta'...
$ git fetch origin 911ab07c1db4e855e20dd431c8a39272dd528e52:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Test-CPAN-Meta
 * [new ref]         911ab07c1db4e855e20dd431c8a39272dd528e52 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 911ab07 Eliminate use of obsolete %patchN syntax (#2283636)