$ git clone -n https://src.fedoraproject.org/rpms/perl-Test2-Harness.git /var/lib/mock/f40-build-2068788-49293/root/chroot_tmpdir/scmroot/perl-Test2-Harness
Cloning into '/var/lib/mock/f40-build-2068788-49293/root/chroot_tmpdir/scmroot/perl-Test2-Harness'...
$ git fetch origin 727c252703ea51267b2f339e04999ae7ebfbc6a4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Test2-Harness
 * [new ref]         727c252703ea51267b2f339e04999ae7ebfbc6a4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 727c252 1.000155 bump