$ git clone -n https://src.fedoraproject.org/rpms/perl-Locale-SubCountry.git /var/lib/mock/f41-build-780093-13558/root/chroot_tmpdir/scmroot/perl-Locale-SubCountry
Cloning into '/var/lib/mock/f41-build-780093-13558/root/chroot_tmpdir/scmroot/perl-Locale-SubCountry'...
$ git fetch origin 8c50d866ce7e18f1e972014381f926d62820c0e5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Locale-SubCountry
 * [new ref]         8c50d866ce7e18f1e972014381f926d62820c0e5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8c50d86 Eliminate use of obsolete %patchN syntax (#2283636)