$ git clone -n https://src.fedoraproject.org/rpms/pmars.git /var/lib/mock/f40-build-747343-113155/root/chroot_tmpdir/scmroot/pmars
Cloning into '/var/lib/mock/f40-build-747343-113155/root/chroot_tmpdir/scmroot/pmars'...
$ git fetch origin 8b26b27217f668677684eea8325091fc367b6371:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/pmars
 * [new ref]         8b26b27217f668677684eea8325091fc367b6371 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8b26b27 Set build_type_safety_c to 0 (#2155640)