$ git clone -n https://src.fedoraproject.org/rpms/perl-Authen-Krb5.git /var/lib/mock/f40-build-2435122-60772/root/chroot_tmpdir/scmroot/perl-Authen-Krb5
Cloning into '/var/lib/mock/f40-build-2435122-60772/root/chroot_tmpdir/scmroot/perl-Authen-Krb5'...
$ git fetch origin 1376b8c056e45ac04eaf9f276250a2474e4f4e45:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Authen-Krb5
 * [new ref]         1376b8c056e45ac04eaf9f276250a2474e4f4e45 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1376b8c Orphaned for 6+ weeks