$ git clone -n https://src.fedoraproject.org/rpms/gamemode.git /var/lib/mock/f39-build-1535618-36247/root/chroot_tmpdir/scmroot/gamemode
Cloning into '/var/lib/mock/f39-build-1535618-36247/root/chroot_tmpdir/scmroot/gamemode'...
$ git fetch origin 47109a1313128ba6b8c7164cf456e9afb7bc5126:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gamemode
 * [new ref]         47109a1313128ba6b8c7164cf456e9afb7bc5126 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 47109a1 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild