$ git clone -n https://src.fedoraproject.org/rpms/libheif.git /var/lib/mock/f45-build-16314-485/root/chroot_tmpdir/scmroot/libheif
Cloning into '/var/lib/mock/f45-build-16314-485/root/chroot_tmpdir/scmroot/libheif'...
$ git fetch origin 596445c050da8dbc9cf3f02b4db58add84d6f5bf:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libheif
 * [new ref]         596445c050da8dbc9cf3f02b4db58add84d6f5bf -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 596445c Fix condition