$ git clone -n https://src.fedoraproject.org/rpms/DisplayCAL.git /var/lib/mock/f42-build-side-1-3533152-46342/root/chroot_tmpdir/scmroot/DisplayCAL
Cloning into '/var/lib/mock/f42-build-side-1-3533152-46342/root/chroot_tmpdir/scmroot/DisplayCAL'...
$ git fetch origin 43cb6726c9fd47e5353769793b71528d18763b64:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/DisplayCAL
 * [new ref]         43cb6726c9fd47e5353769793b71528d18763b64 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 43cb672 Add patch to fix license field in pyproject metadata