$ git clone -n https://src.fedoraproject.org/rpms/gdk-pixbuf2.git /var/lib/mock/f40-build-2245390-53764/root/chroot_tmpdir/scmroot/gdk-pixbuf2
Cloning into '/var/lib/mock/f40-build-2245390-53764/root/chroot_tmpdir/scmroot/gdk-pixbuf2'...
$ git fetch origin 972b4a161528254e3fe2a577d46204391fdf718d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gdk-pixbuf2
 * [new ref]         972b4a161528254e3fe2a577d46204391fdf718d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 972b4a1 Don't recommend avif and jxl loaders on RHEL