$ git clone -n https://src.fedoraproject.org/rpms/gpaw.git /var/lib/mock/f41-build-855777-167429/root/chroot_tmpdir/scmroot/gpaw
Cloning into '/var/lib/mock/f41-build-855777-167429/root/chroot_tmpdir/scmroot/gpaw'...
$ git fetch origin 692350658d78837285f1f55acd075cd329af7fa2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gpaw
 * [new ref]         692350658d78837285f1f55acd075cd329af7fa2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6923506 New upstream release