$ git clone -n https://src.fedoraproject.org/rpms/opengl-games-utils.git /var/lib/mock/f45-build-21043-577/root/chroot_tmpdir/scmroot/opengl-games-utils
Cloning into '/var/lib/mock/f45-build-21043-577/root/chroot_tmpdir/scmroot/opengl-games-utils'...
$ git fetch origin 347e77d2004a70d22dec058bde8607682a95aba8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/opengl-games-utils
 * [new ref]         347e77d2004a70d22dec058bde8607682a95aba8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 347e77d Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild