$ git clone -n https://src.fedoraproject.org/rpms/gfxstream.git /var/lib/mock/f42-build-3357720-45030/root/chroot_tmpdir/scmroot/gfxstream
Cloning into '/var/lib/mock/f42-build-3357720-45030/root/chroot_tmpdir/scmroot/gfxstream'...
$ git fetch origin ba48b1be4f20c610ae2d20d1abfea18795511c7d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gfxstream
 * [new ref]         ba48b1be4f20c610ae2d20d1abfea18795511c7d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ba48b1b Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild