$ git clone -n https://src.fedoraproject.org/rpms/hexglass.git /var/lib/mock/f39-build-1497446-34613/root/chroot_tmpdir/scmroot/hexglass
Cloning into '/var/lib/mock/f39-build-1497446-34613/root/chroot_tmpdir/scmroot/hexglass'...
$ git fetch origin fb03876374e6836ce3b76c8b0d8eb1fb5e034351:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/hexglass
 * [new ref]         fb03876374e6836ce3b76c8b0d8eb1fb5e034351 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fb03876 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild