$ git clone -n https://src.fedoraproject.org/rpms/perl-LDAP.git /var/lib/mock/f40-build-2088351-50175/root/chroot_tmpdir/scmroot/perl-LDAP
Cloning into '/var/lib/mock/f40-build-2088351-50175/root/chroot_tmpdir/scmroot/perl-LDAP'...
$ git fetch origin b5524bb3dc6f589791f85ecb959125577beff877:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-LDAP
 * [new ref]         b5524bb3dc6f589791f85ecb959125577beff877 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b5524bb Update using of %%patch