$ git clone -n https://src.fedoraproject.org/rpms/perl-Test-Harness.git /var/lib/mock/f41-build-side-1-3095868-39313/root/chroot_tmpdir/scmroot/perl-Test-Harness
Cloning into '/var/lib/mock/f41-build-side-1-3095868-39313/root/chroot_tmpdir/scmroot/perl-Test-Harness'...
$ git fetch origin c47f02dbccd2a1de6844a8348728c16aeea16976:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Test-Harness
 * [new ref]         c47f02dbccd2a1de6844a8348728c16aeea16976 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c47f02d 3.50 bump (rhbz#2304673)